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6-K 1 sbsitr1q21_6k.htm 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For May, 2021

(Commission File No. 1-31317)

Companhia de Saneamento Básico do Estado de São Paulo - SABESP

(Exact name of registrant as specified in its charter)

Basic Sanitation Company of the State of Sao Paulo - SABESP

(Translation of Registrant's name into English)

Rua Costa Carvalho, 300 São Paulo, S.P., 05429-900 Federative Republic of Brazil

(Address of Registrant's principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. Form 20-F X Form 40-F ______

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1)__.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7)__.

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes __ No _X___

If "Yes" is marked, indicated below the file number assigned to the registrant in connection with Rule 12g3-2(b):

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Table of Contents

Company Information

Capital Breakdown 2

Parent Company’s Financial Statements

Statement of Financial Position – Assets 3

Statement of Financial Position – Liabilities 4

Income Statement 6

Statement of Comprehensive Income 7

Statement of Cash Flows 8

Statement of Changes in Equity

1/01/2021 to 3/31/2021 10

1/01/2020 to 3/31/2020 11

Statement of Value Added 12

Comments on the Company’s Performance 13

Notes to the Interim Financial Information 24

Comments on the Company’s Projections 70

Other Information Deemed as Relevant by the Company 71

Reports and Statements

Unqualified Reports on Special Review 73

Executive Officers’ Statement on the Financial Statements 74

Executive Officers’ Statement on the Report of Independent Registered Public Accounting Firm 75

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Company Data / Capital Breakdown

Number of shares Current Quarter
(Units) 3/31/2021
Paid-In Capital
Common 683,509,869
Preferred 0
Total 683,509,869
Treasury Shares
Common 0
Preferred 0
Total 0

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Parent Company’s Financial Statements / Statement of Financial Position – Assets

(R$ thousand)

Code Description Current Quarter Previous Year
3/31/2021 12/31/2020
1 Total Assets 50,906,743 50,418,636
1.01 Current Assets 6,279,873 6,440,838
1.01.01 Cash and Cash Equivalents 864,482 396,401
1.01.02 Financial Investments 2,643,939 3,411,146
1.01.02.03 Financial Investments Valued at Amortized Cost 2,643,939 3,411,146
1.01.03 Accounts Receivable 2,429,969 2,372,083
1.01.03.01 Trade Receivables 2,264,723 2,204,029
1.01.03.02 Other Receivables 165,246 168,054
1.01.03.02.01 Related-Party Balances 165,246 168,054
1.01.04 Inventories 105,934 104,848
1.01.06 Recoverable Taxes 59,258 22,672
1.01.06.01 Current Recoverable Taxes 59,258 22,672
1.01.08 Other Current Assets 176,291 133,688
1.01.08.03 Other 176,291 133,688
1.01.08.03.01 Restricted Cash 36,091 35,742
1.01.08.03.20 Other Assets 140,200 97,946
1.02 Noncurrent Asset 44,626,870 43,977,798
1.02.01 Long-Term Assets 9,540,770 9,194,281
1.02.01.04 Accounts Receivable 268,809 246,957
1.02.01.04.01 Trade Receivables 268,809 246,957
1.02.01.09 Receivables from Related Parties 638,533 638,591
1.02.01.09.03 Receivables from Controlling Shareholders 638,533 638,591
1.02.01.10 Other Noncurrent Assets 8,633,428 8,308,733
1.02.01.10.04 Escrow Deposits 156,005 164,942
1.02.01.10.05 Water National Agency – ANA 26,309 26,463
1.02.01.10.06 Contract Asset 8,298,003 7,969,164
1.02.01.10.20 Other Assets 153,111 148,164
1.02.02 Investments 117,733 109,691
1.02.02.01 Equity Interest 71,471 63,417
1.02.02.01.03 Equity Interest in Jointly-Owned Subsidiaries 65,372 57,318
1.02.02.01.04 Other Investments 6,099 6,099
1.02.02.02 Investment Properties 46,262 46,274
1.02.03 Property, Plant and Equipment 269,467 268,251
1.02.04 Intangible Assets 34,698,900 34,405,575
1.02.04.01 Intangible Assets 34,698,900 34,405,575
1.02.04.01.01 Concession Contracts 1,200,211 1,218,440
1.02.04.01.02 Program Contracts 17,724,389 17,731,230
1.02.04.01.03 Service Contracts 15,138,986 14,872,604
1.02.04.01.04 Software License of Use 543,297 540,625
1.02.04.01.05 Right of Use 92,017 42,676

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Parent Company’s Financial Statements / Statement of Financial Position – Liabilities

(R$ thousand)

Code Description Current Quarter Previous Year
3/31/2021 12/31/2020
2 Total Liabilities 50,906,743 50,418,636
2.01 Current Liabilities 6,203,068 5,900,130
2.01.01 Labor Liabilities and Pension Plan Obligations 338,355 410,943
2.01.01.01 Pension Plan Obligations 25,897 48,198
2.01.01.02 Labor Liabilities 312,458 362,745
2.01.02 Trade Payables 250,019 263,741
2.01.02.01 National Suppliers 250,019 263,741
2.01.03 Tax Liabilities 255,017 266,819
2.01.03.01 Federal Tax Liabilities 250,770 258,902
2.01.03.01.01 Income Tax and Social Contribution Payable 92,596 69,041
2.01.03.01.02 Pis-Pasep and Cofins Payable 78,227 93,601
2.01.03.01.03 INSS (Social Security Contribution) Payable 36,479 37,599
2.01.03.01.20 Other Federal Taxes 43,468 58,661
2.01.03.03 Municipal Tax Liabilities 4,247 7,917
2.01.04 Borrowings and Financing 3,225,699 3,034,449
2.01.04.01 Borrowings and Financing 1,079,416 1,016,356
2.01.04.01.01 In Local Currency 715,774 656,712
2.01.04.01.02 In Foreign Currency 363,642 359,644
2.01.04.02 Debentures 2,056,696 1,952,670
2.01.04.03 Financing through Lease 89,587 65,423
2.01.05 Other Liabilities 1,380,113 1,163,969
2.01.05.01 Payables to Related Parties 626 626
2.01.05.01.03 Payables to Controlling Shareholders 626 626
2.01.05.02 Other 1,379,487 1,163,343
2.01.05.02.01 Dividends and Interest on Capital Payable 231,611 231,611
2.01.05.02.04 Services Payable 617,713 453,750
2.01.05.02.05 Refundable Amounts 41,374 40,514
2.01.05.02.06 Program Contract Commitments 151,273 162,541
2.01.05.02.07 Public-Private Partnership (PPP) 150,407 130,207
2.01.05.02.09 Indemnities 8,460 8,969
2.01.05.02.20 Other Liabilities 178,649 135,751
2.01.06 Provisions 753,865 760,209
2.01.06.01 Tax, Social Security, Labor and Civil Provisions 191,077 187,193
2.01.06.01.01 Tax Provisions 26,582 26,281
2.01.06.01.02 Social Security and Labor Provisions 89,605 88,475
2.01.06.01.04 Civil Provisions 74,890 72,437
2.01.06.02 Other Provisions 562,788 573,016
2.01.06.02.03 Provisions for Environmental Liabilities and Decommissioning 18,056 26,299
2.01.06.02.04 Provisions for Customers 145,413 140,093
2.01.06.02.05 Provisions for Suppliers 399,319 406,624
2.02 Noncurrent Liabilities 21,413,113 21,724,802
2.02.01 Borrowings and Financing 13,793,723 14,224,175
2.02.01.01 Borrowings and Financing 8,965,051 9,136,552
2.02.01.01.01 In Local Currency 5,776,327 5,948,334
2.02.01.01.02 In Foreign Currency 3,188,724 3,188,218
2.02.01.02 Debentures 4,393,861 4,678,427

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Parent Company’s Financial Statements / Statement of Financial Position – Liabilities

(R$ thousand)

Code Description Current Quarter Previous Year
3/31/2021 12/31/2020
2.02.01.03 Financing through Lease 434,811 409,196
2.02.02 Other Liabilities 6,806,743 6,687,818
2.02.02.02 Other 6,806,743 6,687,818
2.02.02.02.04 Pension Plan Obligations 2,865,195 2,868,594
2.02.02.02.05 Program Contract Commitments 40,575 68,939
2.02.02.02.06 Public-Private Partnership (PPP) 2,995,918 3,045,066
2.02.02.02.07 Indemnities 27,633 27,765
2.02.02.02.08 Labor Liabilities 2,674 1,007
2.02.02.02.09 Deferred Cofins/Pasep 152,353 149,444
2.02.02.02.20 Other Liabilities 722,395 527,003
2.02.03 Deferred Taxes 290,990 320,716
2.02.03.01 Deferred Income Tax and Social Contribution 290,990 320,716
2.02.03.01.01 Deferred Income Tax and Social Contribution 290,990 320,716
2.02.04 Provisions 521,657 492,093
2.02.04.01 Tax, Social Security, Labor and Civil Provisions 269,578 255,030
2.02.04.01.01 Tax Provisions 35,618 30,987
2.02.04.01.02 Social Security and Labor Provisions 224,067 212,902
2.02.04.01.04 Civil Provisions 9,893 11,141
2.02.04.02 Other Provisions 252,079 237,063
2.02.04.02.03 Provisions for Environmental Liabilities and Decommissioning 242,311 223,252
2.02.04.02.04 Provisions for Customers 9,170 10,059
2.02.04.02.05 Provisions for Suppliers 598 3,752
2.03 Equity 23,290,562 22,793,704
2.03.01 Paid-Up Capital 15,000,000 15,000,000
2.03.04 Profit Reserves 8,194,706 8,194,706
2.03.04.01 Legal Reserve 1,417,072 1,417,072
2.03.04.08 Additional Dividend Proposed 26,376 26,376
2.03.04.10 Reserve for Investments 6,751,258 6,751,258
2.03.05 Retained Earnings/Accumulated Losses 496,858 0
2.03.06 Equity Valuation Adjustments -401,002 -401,002

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Parent Company’s Financial Statements / Income Statement

(R$ thousand)

Code Description YTD Current Year YTD Previous Year
1/01/2021 to 3/31/2021 1/01/2020 to 3/31/2020
3.01 Revenue from Sales and/or Services 4,677,417 4,042,350
3.02 Cost of Sales and/or Services -3,048,043 -2,422,012
3.02.01 Cost of Sales and/or Services -2,047,745 -1,913,247
3.02.02 Construction Costs -1,000,298 -508,765
3.03 Gross Profit 1,629,374 1,620,338
3.04 Operating Income/Expenses -524,389 -617,310
3.04.01 Selling Expenses -315,844 -339,459
3.04.01.01 Selling Expenses -194,793 -181,970
3.04.01.02 Allowance for Doubtful Accounts -121,051 -157,489
3.04.02 General and Administrative Expenses -227,275 -284,179
3.04.04 Other Operating Income 7,796 10,039
3.04.04.01 Other Operating Income 12,201 11,056
3.04.04.02 Cofins and Pasep -4,405 -1,017
3.04.05 Other Operating Expenses 2,880 -7,286
3.04.06 Equity Pickup 8,054 3,575
3.05 Income before Financial Result and Taxes 1,104,985 1,003,028
3.06 Financial Result -354,370 -1,980,285
3.06.01 Financial Income 111,458 100,156
3.06.01.01 Financial Income 116,425 103,809
3.06.01.02 Exchange Gains 447 1,224
3.06.01.03 Cofins and Pasep -5,414 -4,877
3.06.02 Financial Expenses -465,828 -2,080,441
3.06.02.01 Financial Expenses -328,249 -283,905
3.06.02.02 Exchange Losses -137,579 -1,796,536
3.07 Earnings before Income Taxes 750,615 -977,257
3.08 Income Tax and Social Contribution -253,757 319,311
3.08.01 Current -283,483 232,724
3.08.02 Deferred 29,726 86,587
3.09 Net Result from Continued Operations 496,858 -657,946
3.11 Profit/Loss for the Period 496,858 -657,946
3.99 Earnings per Share - (Reais / share)
3.99.01 Basic Earnings per Share
3.99.01.01 Common 0.72692 -0.96260
3.99.02 Diluted Earnings per Share
3.99.02.01 Common 0.72692 -0.96260

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Parent Company’s Financial Statements / Statement of Comprehensive Income

(R$ thousand)

Code Description YTD Current Year YTD Previous Year
1/01/2020 to 1/01/2021 to
3/31/2020 3/31/2021
4.01 Net Income for the Period 496,858 -657,946
4.03 Comprehensive Income (Loss) for the Period 496,858 -657,946

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Parent Company’s Financial Statements / Statement of Cash Flow - Indirect Method

(R$ thousand)

Code Description YTD Current Year YTD Previous Year
1/01/2021 to 3/31/2021 1/01/2020 to 3/31/2020
6.01 Net Cash from Operating Activities 1,044,513 1,188,528
6.01.01 Cash from Operations 1,828,236 1,776,101
6.01.01.01 Profit before Income Tax and Social Contribution 750,615 -977,257
6.01.01.02 Provision and Inflation Adjustments on Provisions 55,284 78,706
6.01.01.04 Finance Charges from Customers -99,148 -197,496
6.01.01.05 Residual Value of Property, Plant and Equipment, Intangible Assets and Investment Properties Written-off 2,938 5,407
6.01.01.06 Depreciation and Amortization 542,052 483,569
6.01.01.07 Interest on Borrowings and Financing Payable 148,608 138,770
6.01.01.08 Monetary and Exchange Variations on Borrowings and Financing 189,970 1,814,857
6.01.01.09 Interest and Monetary Variation Losses 10,361 10,563
6.01.01.10 Interest and Monetary Variation Gains -33,753 -6,585
6.01.01.11 Allowance for Doubtful Accounts 121,051 157,489
6.01.01.12 Provision for Consent Decree (TAC) and Knowledge Retention Program (PRC) 3,095 -490
6.01.01.13 Equity Pickup -8,054 -3,575
6.01.01.14 Interest and Inflation Adjustment PPP 114,662 112,685
6.01.01.15 Others Adjustments -32,956 -6,112
6.01.01.16 Transfer of Funds to the São Paulo Municipal Government 41,153 120,419
6.01.01.17 Construction Margin over Intangible Assets Resulting from Concession Agreements -23,007 -12,655
6.01.01.18 Pension Plan Obligations 45,365 57,806
6.01.02 Changes in Assets and Liabilities -295,433 -394,490
6.01.02.01 Trade Receivables -103,667 85,760
6.01.02.02 Related-Party Balances and Transactions 13,678 34,075
6.01.02.03 Inventories -1,086 2,555
6.01.02.04 Recoverable Taxes -320,069 -12,084
6.01.02.05 Other Assets -9,332 -37,128
6.01.02.06 Escrow Deposits 16,760 -2,730
6.01.02.08 Trade Payables and Contractors -142,979 -239,274
6.01.02.09 Salaries, Payroll Charges and Social Contributions -75,683 8,309
6.01.02.10 Pension Plan Obligations -48,764 -52,052
6.01.02.11 Taxes and Contributions Payable 281,307 -77,718
6.01.02.12 Services Payable 122,810 37,684
6.01.02.13 Other Liabilities 747 -81,271
6.01.02.14 Provisions -32,064 -62,456
6.01.02.15 Deferred Cofins/Pasep 2,909 1,840
6.01.03 Other -488,290 -193,083
6.01.03.01 Interest Paid -195,181 -193,083
6.01.03.02 Income Tax and Social Contribution Paid -293,109 0
6.02 Net Cash from Investing Activities 121,939 -403,505
6.02.01 Acquisition of Intangible Assets -650,920 -393,573
6.02.02 Acquisition of Property, Plant and Equipment -8,335 -9,587
6.02.04 Restricted Cash -349 -345
6.02.07 Financial Investments 781,543 0

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Parent Company’s Financial Statements / Statement of Cash Flow - Indirect Method

(R$ thousand)

Code Description YTD Current Year YTD Previous Year
1/01/2021 to 3/31/2021 1/01/2020 to 3/31/2020
6.03 Net Cash from Financing Activities -698,371 -714,867
6.03.01 Funding 57,511 29,792
6.03.02 Amortization -568,349 -580,229
6.03.04 Public-Private Partnership (PPP) -143,610 -133,965
6.03.05 Program Contract Commitments -43,923 -30,465
6.05 Increase (Decrease) in Cash and Cash Equivalents 468,081 70,156
6.05.01 Opening Balance of Cash and Cash Equivalents 396,401 2,253,210
6.05.02 Closing Balance of Cash and Cash Equivalents 864,482 2,323,366

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Parent Company’s Financial Statements / Statement of Changes in Equity / 1/01/2021 to 3/31/2021

(R$ thousand)

Code Description Paid-Up Capital Capital Reserves, Options Granted and Treasury Shares Profit Reserves Retained Earnings/Accumulated Losses Other Comprehensive Income Equity
5.01 Opening Balances 15,000,000 0 8,194,706 0 -401,002 22,793,704
5.03 Restated Opening Balances 15,000,000 0 8,194,706 0 -401,002 22,793,704
5.05 Total Comprehensive Income 0 0 0 496,858 0 496,858
5.05.01 Net Income for the Period 0 0 0 496,858 0 496,858
5.07 Closing Balances 15,000,000 0 8,194,706 496,858 -401,002 23,290,562

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Parent Company’s Financial Statements / Statement of Changes in Equity / 1/01/2020 to 3/31/2020

(R$ thousand)

Code Description Paid-Up Capital Capital Reserves, Options Granted and Treasury Shares Profit Reserves Retained Earnings/Accumulated Losses Other Comprehensive Income Equity
5.01 Opening Balances 15,000,000 0 7,547,954 0 -912,171 21,635,783
5.03 Restated Opening Balances 15,000,000 0 7,547,954 0 -912,171 21,635,783
5.05 Total Comprehensive Income 0 0 0 -657,946 0 -657,946
5.05.01 Net Income for the Period 0 0 0 -657,946 0 -657,946
5.07 Closing Balances 15,000,000 0 7,547,954 -657,946 -912,171 20,977,837

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Parent Company’s Financial Statements / Statement of Added Value

(R$ thousand)

Code Description YTD Current Year YTD Previous Year
1/01/2021 to 3/31/2021 1/01/2020 to 3/31/2020
7.01 Revenue 4,851,677 4,178,865
7.01.01 Goods, Products and Services Sold 3,937,222 3,803,878
7.01.02 Other Revenue 12,201 11,056
7.01.03 Revenue from Construction of Own Assets 1,023,305 521,420
7.01.04 Allowance for/Reversal of Doubtful Accounts -121,051 -157,489
7.02 Inputs Acquired from Third Parties -2,213,012 -1,571,533
7.02.01 Costs Goods, Products and Services Sold -1,956,218 -1,273,809
7.02.02 Materials, Electricity, Outsourced Services and Others -259,675 -290,438
7.02.04 Other 2,881 -7,286
7.03 Gross Value Added 2,638,665 2,607,332
7.04 Retentions -542,052 -483,569
7.04.01 Depreciation, Amortization and Depletion -542,052 -483,569
7.05 Net Added Value Produced 2,096,613 2,123,763
7.06 Wealth Received in Transfer 124,926 108,608
7.06.01 Equity Pickup 8,054 3,575
7.06.02 Financial Income 116,872 105,033
7.07 Total Value Added to Distribute 2,221,539 2,232,371
7.08 Value Added Distribution 2,221,539 2,232,371
7.08.01 Personnel 560,180 613,926
7.08.01.01 Salaries and Wages 395,334 424,388
7.08.01.02 Benefits 135,489 153,515
7.08.01.03 Government Severance Indemnity Fund for Employees (FGTS) 29,357 36,023
7.08.02 Taxes and Contributions 692,278 120,651
7.08.02.01 Federal 633,647 68,333
7.08.02.02 State 43,166 38,819
7.08.02.03 Municipal 15,465 13,499
7.08.03 Value Distributed to Providers of Capital 472,223 2,155,740
7.08.03.01 Interest 465,829 2,151,496
7.08.03.02 Rental 6,394 4,244
7.08.04 Value Distributed to Shareholders 496,858 -657,946
7.08.04.03 Retained Earnings/Accumulated Losses for the Period 496,858 -657,946

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Comments on the Company’s Performance

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  1. Highlights

In 1Q21, the Company recorded net income of R$ 496.9 million, compared to loss of R$ 657.9 million in 1Q20, an increase of R$ 1,154.85 million, or 175.5%.

Adjusted EBITDA totaled R$ 1,636.4 million, an increase of R$ 152.6 million over the R$ 1,483.8 million reported in 1Q20, or 10.3%.

The main factors were:

(a) Operations in the Municipality of Mauá

In June 2020, the Company entered into an agreement with the municipality of Mauá, starting operations in November. The operation in Santo André led to an increase of R$ 23.1 million in revenue from sanitation services and R$ 9.0 million in expenses, as shown below:

Mauá Impacts (in million) 1Q21 1Q20 Var. — R$
Wholesale revenue (1) - 0.2 (0.2)
Retail revenue (2) 23.3 - 23.3
(=) Total revenue from sanitation services 23.3 0.2 23.1
Cofins and Pasep (1.7) (0.0) (1.7)
(=) Net revenue 21.6 0.2 21.4
Costs and expenses (3) (9.0) - (9.0)
(=) Total expenses (9.0) - (9.0)
(=) Net effect 12.6 0.2 12.4

(1) Revenue from water supply in the wholesale segment, which totaled R$ 20.2 million in 1Q20.

(2) Revenue referring to billing from retail operations.

(3) Costs and expenses relates to the operation (excludes indirect costs and expenses).

(b) Lower effects from the economic instability worsened by the COVID-19 pandemic

The economic instability, worsened by the beginning of the COVID-19 pandemic, led to a strong appreciation of the U.S. dollar and Yen against the Brazilian real in 1Q20, significantly affecting financial expenses on borrowings and financing in foreign currency. In 1Q21, expenses with exchange variation on borrowings and financing totaled R$ 137.6 million, a decrease of R$ 1,658.9 million from the R$ 1,796.5 million recorded in 1Q20.

In addition, allowances for doubtful accounts fell by R$ 36.4 million year over year in 1Q21, from R$ 157.5 million to R$ 121.1 million.

(c) Reduction of foreign currency exposure

On April 28, 2020, the Company completed the debt conversion, from US$ 494.6 million to R$ 2,810.9 million, with the Inter-American Development Bank (IDB) with a view to reduce foreign currency exposure.

On September 30, 2020, it carried out the early amortization of Eurobonds maturing in December 2020, in the amount of R$ 1,910.1 million (US$ 350.0 million).

The main result of these actions was the lower dollar-denominated debt, which fell by 84.2%, from US$ 1,027.7 million on March 31, 2020 to US$ 162.5 million on March 31, 2021.

Debt denominated in foreign currency accounted for 21% in March 2021 (55% in March 2020).

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Comments on the Company’s Performance

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  1. Financial Highlights

R$ million

1Q21 1Q20 Var. — R$ %
Revenue from sanitation services 3,937.2 3,803.9 133.3 3.5
Construction revenue 1,023.3 521.4 501.9 96.3
COFINS and PASEP/TRCF taxes (283.1) (282.9) (0.2) 0.1
(=) Net operating revenue 4,677.4 4,042.4 635.0 15.7
Costs and expenses (2,590.9) (2,536.9) (54.0) 2.1
Construction costs (1,000.3) (508.8) (491.5) 96.6
Equity pickup 8.1 3.6 4.5 125.0
Other operating revenue (expenses), net 10.7 2.8 7.9 282.1
(=) Earnings before financial result, income tax and social contribution 1,105.0 1,003.1 101.9 10.2
Financial result (354.4) (1,980.3) 1,625.9 (82.1)
(=) Earnings before income tax and social contribution 750.6 (977.2) 1,727.8 (176.8)
Income tax and social contribution (253.7) 319.3 (573.0) (179.5)
(=) Net income (loss) 496.9 (657.9) 1,154.8 (175.5)
Earnings (loss) per share (R$) * 0.73 (0.96)

() Number of shares = 683,509,869*

Adjusted EBITDA Reconciliation (Non-accounting measures)

R$ million

1Q21 1Q20 Var. — R$ %
Net income (loss) 496.9 (657.9) 1,154.8 (175.5)
Income tax and social contribution 253.7 (319.3) 573.0 (179.5)
Financial result 354.4 1,980.3 (1,625.9) (82.1)
Other operating revenue (expenses), net (10.7) (2.8) (7.9) 282.1
(=) Adjusted EBIT* 1,094.3 1,000.3 94.0 9.4
Depreciation and amortization 542.1 483.5 58.6 12.1
(=) Adjusted EBITDA** 1,636.4 1,483.8 152.6 10.3
(%) Adjusted EBITDA margin 35.0 36.7

** Adjusted EBIT corresponds to income before: (i) other operating revenues/expenses, net; (ii) financial result; and (iii) income tax and social contribution.*

*** Adjusted EBITDA corresponds to income before: (i) other operating revenues (expenses), net; (ii) financial result; (iii) income tax and social contribution; and (iv) depreciation and amortization expenses.*

In 1Q21, net operating revenue, which considers construction revenue, totaled R$ 4,677.4 million, up 15.7% over 1Q20.

Costs and expenses, which consider construction costs, totaled R$ 3,591.2 million, up 17.9% over 1Q20.

Adjusted EBIT totaled R$ 1,094.3 million, up 9.4% over the R$ 1,000.3 million recorded in 1Q20.

Adjusted EBITDA, in the amount of R$ 1,636.4 million, increased by 10.3% over the R$ 1,483.8 million reported in 1Q20 (R$ 6,574.3 million in the last 12 months).

The Adjusted EBITDA margin reached 35.0% in 1Q21, compared to 36.7% in 1Q20 (35.7% in the last 12 months).

Excluding the effects of revenue and construction costs, adjusted EBITDA margin reached 44.2% in 1Q21, compared to 41.8% in 1Q20 (45.6% in the last 12 months).

The Company recorded net income of R$ 496.9 million in 1Q21, compared to loss of R$ 657.9 million in 1Q20.

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  1. Revenue from sanitation services

Gross operating revenue from sanitation services, in the amount of R$ 3,937.2 million, which does not consider construction revenue, increased R$ 133.3 million, or 3.5%, when compared to the R$ 3,803.9 million recorded in in 1Q20.

The main factors that led to this increase were:

● Tariff adjustment of 3.4% since August 2020;

● Increase of 2.6% in total billed volume, excluding the effects of Mauá; and

● Beginning of water supply in the retail segment in the municipality of Mauá in November 2020, with an impact of R$ 23.1 million in the 1Q21 revenue from sanitation services.

  1. Construction revenue

Construction revenue increased R$ 501.9 million in 1Q21, or 96.3%, over 1Q20. The increase was mainly due to higher asset investments.

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  1. Billed volume

The following tables show the water and sewage billed volumes, on a quarter-over-quarter basis, per customer category and region. Mauá volumes are presented individually.

WATER AND SEWAGE BILLED VOLUME (1) PER CUSTOMER CATEGORY - million m 3
Water Sewage Water + Sewage
Category 1Q21 1Q20 Var. (%) 1Q21 1Q20 Var. (%) 1Q21 1Q20 Var. (%)
Residential 473.1 453.7 4.3 411.0 392.5 4.7 884.1 846.2 4.5
Commercial 41.3 44.8 (7.8) 39.0 43.6 (10.6) 80.3 88.4 (9.2)
Industrial 8.3 8.2 1.2 8.5 10.0 (15.0) 16.8 18.2 (7.7)
Public 8.9 10.5 (15.2) 7.7 9.4 (18.1) 16.6 19.9 (16.6)
Total retail 531.6 517.2 2.8 466.2 455.5 2.3 997.8 972.7 2.6
Wholesale (3) 13.2 12.4 6.5 3.9 4.0 (2.5) 17.1 16.4 4.3
Subtotal 544.8 529.6 2.9 470.1 459.5 2.3 1,014.9 989.1 2.6
Mauá (4) 5.6 8.8 (36.4) - - - 5.6 8.8 (36.4)
Total 550.4 538.4 2.2 470.1 459.5 2.3 1,020.5 997.9 2.3
Water Sewage Water + Sewage
WATER AND SEWAGE BILLED VOLUME (1) PER REGION - million m 3
Water Sewage Water + Sewage
Region 1Q21 1Q20 Var. (%) 1Q21 1Q20 Var. (%) 1Q21 1Q20 Var. (%)
Metropolitan 353.9 345.0 2.6 311.2 304.4 2.2 665.1 649.4 2.4
Regional (2) 177.7 172.2 3.2 155.0 151.1 2.6 332.7 323.3 2.9
Total retail 531.6 517.2 2.8 466.2 455.5 2.3 997.8 972.7 2.6
Wholesale (3) 13.2 12.4 6.5 3.9 4.0 (2.5) 17.1 16.4 4.3
Subtotal 544.8 529.6 2.9 470.1 459.5 2.3 1,014.9 989.1 2.6
Mauá (4) 5.6 8.8 (36.4) - - - 5.6 8.8 (36.4)
Total 550.4 538.4 2.2 470.1 459.5 2.3 1,020.5 997.9 2.3

(1) Unaudited

(2) Including coastal and interior regions

(3) Wholesale includes volumes of reuse water and non-domestic sewage

(4) Billed volume in the retail segment in 1Q21 and in the wholesale segment in 1Q20

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  1. Costs, administrative & selling expenses and construction costs

Costs, administrative and selling expenses and construction costs increased R$ 545.5 million in 1Q21 (17.9%). Excluding construction costs, the increase was R$ 54.0 million (2.1%). Costs, administrative and selling expenses and construction costs as a percentage of net revenue was 76.8% in 1Q21, compared to 75.3% in 1Q20.

R$ million

1Q21 1Q20 Var. — R$ %
Salaries and payroll charges and Pension plan obligations 621.4 677.8 (56.4) (8.3)
General supplies 68.3 65.7 2.6 4.0
Treatment supplies 98.9 93.8 5.1 5.4
Services 503.9 424.1 79.8 18.8
Electricity 358.9 326.5 32.4 9.9
General expenses 258.9 292.4 (33.5) (11.5)
Tax expenses 17.4 15.6 1.8 11.5
Subtotal 1,927.7 1,895.9 31.8 1.7
Depreciation and amortization 542.1 483.5 58.6 12.1
Allowance for doubtful accounts 121.1 157.5 (36.4) (23.1)
Subtotal 663.2 641.0 22.2 3.5
Costs, administrative and selling expenses 2,590.9 2,536.9 54.0 2.1
Construction costs 1,000.3 508.8 491.5 96.6
Costs, adm & selling expenses and construction costs 3,591.2 3,045.7 545.5 17.9
% of net revenue 76.8 75.3

Salaries and payroll charges and Pension plan obligations

In 1Q21, the R$ 56.4 million, or 8.3%, decrease was due to:

● R$ 32.2 million, mostly due to the 8.5% reduction in the number of employees, arising from the Knowledge Retention Program ( Programa de Retenção do Conhecimento) , mitigated by the application, since February 2021, of 1.0% referring to the assessment cycle of the Career and Salaries Plan ; and

● R$ 12.7 million with pension plans, due to changes in the actuarial assumptions.

Services

Expenses with services totaled R$ 503.9 million, an increase of R$ 79.8 million, or 18.8%, over the R$ 424.1 million recorded in 1Q20. The main increases were:

● R$ 32.0 million with paving and replacing of sidewalks;

● R$ 27.0 million with meter reading and bill delivery; and

● R$ 13.3 million with network maintenance and connections.

Electricity

Electricity expenses totaled R$ 358.9 million in 1Q21, up R$ 32.4 million, or 9.9%, over the R$ 326.5 million recorded in 1Q20. In 1Q21, the Free Market Tariffs (ACL) accounted for 51.5% of total expenses (44.9% in 1Q20) while the Regulated Market Tariffs (ACR) accounted for 48.5% (55.1% in 1Q20).

The main factors that contributed this variation were:

● Average increase of 15.2% in ACL prices (includes Grid Market Tariffs - TUSD), with a 14.9% rise in consumption; and

● Average increase of 12.2% in ACR tariffs, with a 9.6% drop in consumption.

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General expenses

Decrease of R$ 33.5 million, or 11.5%, totaling R$ 258.9 million in 1Q21, compared to the R$ 292.4 million recorded in 1Q20, mainly due to:

● Lower expenses with lawsuits in 1Q21, in the amount of R$ 20.5 million; and

● Decrease of R$ 10.5 million in estimated losses with revenue from consulting services.

Depreciation and amortization

Increase of R$ 58.6 million, or 12.1%, due to beginning of operations of intangible assets, in the amount of R$ 4.1 billion.

Allowance for doubtful accounts

Decrease of R$ 36.4 million, from R$ 157.5 million in 1Q20 to R$ 121.1 million in 1Q21, due to higher provisioning arising from the increase in default and the worsening of expected future losses in 2020 with the beginning of the COVID-19 pandemic.

  1. Financial result

R$ million

Var.
1Q21 1Q20 R$ %
Financial expenses, net of income (158.6) (159.0) 0.4 (0.3)
Monetary and exchange variation, net (195.8) (1,821.3) 1,625.5 (89.2)
Financial Result (354.4) (1,980.3) 1,625.9 (82.1)

Financial expenses, net of income

R$ million

Var.
1Q21 1Q20 R$ %

Financial expenses

Interest and charges on domestic borrowings and financing (104.6) (73.6) (31.0) 42.1
Interest and charges on international borrowings and financing (12.5) (49.1) 36.6 (74.5)
Other financial expenses (101.3) (99.1) (2.2) 2.2
Total financial expenses (218.4) (221.8) 3.4 (1.5)
Financial income 59.8 62.8 (3.0) (4.8)
Financial expenses, net of income (158.6) (159.0) 0.4 (0.3)

Decrease of R$ 0.4 million, due to:

● Increase of R$ 31.0 million in interest and charges on domestic borrowings and financing, mainly due to: (i) higher interest on debentures, in the amount of R$ 19.6 million, mainly from the proceeds of the 25th, 26th and 27th issues; (ii) fundraising with IDB INVEST in December 2020, with an impact of R$ 11.1 million; and (iii) debt exchange with IDB, from US$ 494.6 million to R$ 2,810.9 million, with an effect of R$ 10.5 million; and

● Decrease of R$ 36.6 million in interest and charges on international borrowings and financing, mostly due to: (i) amortization of Eurobonds, leading to a decrease of R$ 26.4 million; and (ii) debt exchange with IDB, from US$ 494.6 million to R$ 2,810.9 million, with an effect of R$ 4.8 million.

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Monetary and exchange variation, net

R$ million

Var.
1Q21 1Q20 R$ %

Monetary and exchange variation losses

Monetary variation on borrowings and financing (52.4) (18.6) (33.8) 181.7
Exchange variation on borrowings and financing (137.6) (1,796.5) 1,658.9 (92.3)
Other monetary variations (57.4) (43.6) (13.8) 31.7
Total monetary and exchange variation losses (247.4) (1,858.7) 1,611.3 (86.7)
Monetary/exchange variation gains 51.6 37.4 14.2 38.0
Monetary/exchange variation, net (195.8) (1,821.3) 1,625.5 (89.2)

The effect of net monetary and exchange variations in 1Q21 was R$ 1,625.5 million, lower than in 1Q20, highlighting:

● R$ 33.8 million increase in monetary variation on borrowings and financing, mainly due to the proceeds of the 25th, 26th and 27th debenture issues and the increase in the IPCA;

● Decrease of R$ 1,658.9 million in exchange variation on borrowings and financing, due to:

(i) lower appreciation of U.S. dollar and Yen against the Brazilian real in 1Q21 (9.6% and 2.2%, respectively), compared to the 1Q20 appreciation (29.0% and 30.2%, respectively); (ii) debt exchange with IDB, from US$ 494.6 million to R$ 2,810.9 million; and (iii) amortization of Eurobonds in September 2020, in the amount of R$ 1,910.1 million (US$ 350.0 million);

● Increase of R$ 13.8 million in other monetary variations, due to: (i) higher monetary variation on lease agreements, in the amount of R$ 8.5 million; and (ii) higher monetary variation on lawsuits, in the amount of R$ 3.9 million; and

● Increase of R$ 14.2 million in monetary and exchange variations gains, due to higher adjustments on agreements and escrow deposits, arising from the increase in the IPCA.

  1. Income and social contribution taxes

In 1Q21, there was an increase of R$ 573.0 million, due to higher taxable income, highlighting:

● Decrease in expenses with exchange variation, in the amount of R$ 1,658.9 million; and

● Higher net operating revenues, excluding the effect of the construction revenue, of R$ 133.1 million.

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  1. Indicators

a) Operating

This quarter the water loss indicators already include the municipality of Guarulhos. The municipalities of Santo André and Mauá will become part of the indicator in 2022.

Information (*) 1Q21 1Q20 %
Water connections (1) 10,133 9,980 1.5
Sewage connections (1) 8,566 8,375 2.3
Population directly served - water (2) 27.6 27.1 1.8
Population directly served - sewage (2) 24.4 23.9 2.1
Number of employees 12,742 13,923 (8.5)
Volume of water produced in the quarter (3) 728 731 (0.4)
IPM - Micromeasured water loss (%) (4) 26.8 28.9 (7.3)
IPDt (liters/connection x day) (4) 257.0 284 (9.5)

(1) Total connections, active and inactive, in thousand units at the end of the period. Excludes Mauá

(2) In million inhabitants, at the end of the period. Excludes wholesale supply and Mauá

(3) In millions of cubic meters

(4) In 1Q20, excludes Guarulhos, Santo André, Mauá, Aguaí, Tapiratiba and Tejupá; in 1Q21, excludes Santo André, Mauá, Aguaí, Tapiratiba and Tejupá

(*) Unaudited

b) Managerial

The managerial performance indicators below show revenue from sanitation services, operating expenses and EBITDA, all measured based on billed cubic meter.

The historical series has been presented since 2014, based on quarterly financial data disclosed by the Company, excluding non-recurring and relevant events that would distort the result.

All indicators were calculated based on average values of 1Q21, adjusted by changes in the IPCA consumer price index, to determine the behavior on a same-price base in the period.

Revenue from sanitation services per billed cubic meter increased, especially after the third quarter of 2015. In 1Q21, it was down by 3.9% from 1Q20.

Operating expenses per billed cubic meter increased in a controlled manner on a quarterly basis, compatible with the expansion of operations, showing a stable average performance and reflecting disciplined cost management. In 1Q21, it fell by 5.6% from 1Q20.

Finally, the EBITDA per cubic meter increased in the period, basically due to the performance of gross revenue from sanitation services and operating expenses. The first quarter of 2021 shows a positive evolution of 2.4% compared to 1Q20, reflecting the Company’s efforts in view of the challenges of the economic scenario.

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REVENUE FROM SANITATION SERVICES PER BILLED m³ - R$/m³

Figures at 1Q21 average prices, adjusted by IPCA

The following were not considered:

  • Construction revenue

  • R$928 million referring to the agreement with Guarulhos in 4Q18

  • R$1,254 million referring to agreement with Santo André in 3Q19

  • R$195 million referring to agreement with Mauá in 2Q20

OPERATING EXPENSES PER BILLED m³ - R$/m³

Figures at 1Q21 average prices, adjusted by IPCA

Expenses considered: personnel, general supplies, treatement materials, services, electricity, general expenses and tax

Reversals excluded:

  • R$696 million referring to agreement with the São Paulo State Government in 1Q15

  • R$307 million referring to the migration of the supplementary pension plan in 3Q16

  • R$173 million referring to the TAC - Retirees in 3Q19

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EBITDA PER BILLED m³ - R$/m³

Figures at 1Q21 average prices, adjusted by IPCA

The following were not considered:

Revenue:

  • R$928 million referring to the agreement with Guarulhos in 4Q18

  • R$1,254 million referring to agreement with Santo André in 3Q19

  • R$195 million referring to agreement with Mauá in 2Q20

Reversal of expenses:

  • R$696 million referring to agreement with the São Paulo State Government in 1Q15

  • R$307 million referring to the migration of the supplementary pension plan in 3Q16

  • R$173 million referring to the end of the TAC - Retirees in 3Q19

Economic

Economic variables at the close of the quarter (*) 1Q21 1Q20
Amplified Consumer Price Index (1) 2.05 0.53
National Consumer Price Index (1) 1.96 0.54
Consumer Price Index (1) 1.81 0.50
Interbank Deposit Certificate (2) 2.65 3.65
U.S. Dollar (3) 5.6973 5.1987
Yen (3) 0.05152 0.04835

(1) Accrued in the quarter (%)

(2) Quarterly rate on the last day

(3) Ptax sale rate on the last day

(*) Unaudited

  1. Borrowings and financing
R$ thousand
DEBT PROFILE
INSTITUTION 2021 2022 2023 2024 2025 2026 2027 onwards TOTAL % of total
Local Currency
Debentures 1,720,391 585,510 684,974 921,681 488,508 381,539 1,667,954 6,450,557 38
Caixa Econômica Federal 68,857 96,105 89,983 88,991 94,561 100,482 886,702 1,425,681 8
BNDES 133,261 177,681 170,937 164,287 144,101 134,853 397,631 1,322,751 8
IDB 2202 90,674 181,349 181,349 181,349 181,349 181,349 1,618,291 2,615,710 15
IDB INVEST 44,815 89,630 89,630 89,630 89,630 89,630 450,076 943,041 6

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Lease (Concession Agreements, Program Contracts and Contract Asset) 32,756 34,993 37,606 40,933 44,558 28,843 201,766 421,455 2
Leasing (others) 47,331 40,380 15,232 - - - - 102,943 1
Others 3,028 4,038 3,977 1,757 1,611 - - 14,411 0
Interest and other charges 170,507 - - - - - - 170,507 1
Total in Local Currency 2,311,620 1,209,686 1,273,688 1,488,628 1,044,318 916,696 5,222,420 13,467,056 79
Foreign Currency
IDB 29,279 58,557 58,557 58,557 60,575 4,036 64,033 333,594 2
IBRD 17,319 34,638 34,638 34,638 34,638 34,638 257,473 447,982 3
JICA 115,191 218,285 218,285 218,285 218,285 218,285 1,425,263 2,631,879 15
IDB 1983AB 43,825 43,825 42,924 - - - - 130,574 1
Interest and other charges 8,337 - - - - - - 8,337 0
Total in Foreign Currency 213,951 355,305 354,404 311,480 313,498 256,959 1,746,769 3,552,366 21
Total 2,525,571 1,564,991 1,628,092 1,800,108 1,357,816 1,173,655 6,969,189 17,019,422 100

Covenants

The table below shows the most restrictive clauses in 1Q21:

Covenants
Adjusted EBITDA / Adjusted Financial Expenses Equal to or higher than 2.80
Adjusted Net Debt / Adjusted EBITDA Equal to or lower than 3.80
Adjusted Total Debt / Adjusted EBITDA Lower than 3.65
Other Onerous Debt (1) / Adjusted EBITDA Equal to or lower than 1.30
Adjusted Current Liquidity Higher than 1.00
EBITDA / Financial Expenses Paid Equal to or higher than 2.35
Net Debt / Adjusted EBITDA Equal to or lower than 3.50

(1) “Other Onerous Debts” correspond to the sum of pension obligations and healthcare plan, installment payment of tax debts and installment payment of debts with the electricity supplier.

As of March 31, 2021, the Company had met the requirements set forth by its borrowings and financing agreements.

  1. Capex

Investments totaled R$ 1,168.4 million in 1Q21.

Cash disbursed in 2020 regarding the Company’s historical investments totaled R$ 659.3 million. The chart below shows investments broken down by water, sewage, and region:

R$ million

Investment by segment Water Sewage Total
Metropolitan Region 458.5 407.1 865.6
Regional Systems 148.6 154.2 302.8
Total 607.1 561.3 1,168.4

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1 Operations

Companhia de Saneamento Básico do Estado de São Paulo ("SABESP" or the "Company") is a mixed-capital company headquartered in the municipality São Paulo, at Rua Costa Carvalho, 300, CEP 05429-900, controlled by the São Paulo State. The Company is engaged in the provision of basic and environmental sanitation services in the São Paulo State, as well as it supplies treated water and sewage services on a wholesale basis.

In addition to providing basic sanitation services in the São Paulo State, SABESP may perform activities in other states and countries, and can operate in drainage, urban cleaning, solid waste handling and energy markets. SABESP aims to be a world reference in the provision of sanitation services, in a sustainable, competitive and innovative manner, with a focus on customers.

As of March 31, 2021, the Company operated water and sewage services in 375 municipalities of the São Paulo State, 342 have already signed contracts, pursuant to Law 11,445/2007. Most of these municipalities’ operations are based on 30-year concession, program and service contracts, except for the municipalities of Guarulhos, Mauá, Mogi das Cruzes, Santo André, São Bernardo do Campo, São João da Boa Vista and Tejupá, which have a 40-year term.

The table below shows a summary of the contractual situation of the municipalities served:

March 31, 2021 December 31, 2020 March 31, 2020
Total municipalities that have already signed contracts 342 342 328
Balance – intangible and contract assets 40,324,692 39,440,568 36,171,535
Percentage of intangible and contract assets 93.79% 93.08% 90.05%
Revenue from sanitation services (excluding construction revenue) 3,741,662 14,406,803 3,498,608
Percentage of revenue from sanitation services (excluding construction revenue) 95.03% 95.05% 91.97%
Municipalities with expired contracts: 8 8 20
Balance – intangible and contract assets 216,603 264,931 1,627,183
Percentage of intangible and contract assets 0.50% 0.63% 4.05%
Revenue from sanitation services (excluding construction revenue) 9,957 39,088 127,216
Percentage of revenue from sanitation services (excluding construction revenue) 0.25% 0.26% 3.34%
Municipalities with concession agreements due by 2030: 25 25 26
Balance – intangible and contract assets 1,165,690 1,436,529 1,183,899
Percentage of intangible and contract assets 2.71% 3.39% 2.95%
Revenue from sanitation services (excluding construction revenue) 155,216 597,483 149,229
Percentage of revenue from sanitation services (excluding construction revenue) 3.94% 3.94% 3.92%
Municipality of São Paulo:
Percentage of intangible and contract assets 42.65% 37.94% 43.00%
Percentage of revenue from sanitation services (excluding construction revenue) 44.30% 44.58% 45.65%

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The Company operates in the municipality of Juquitiba under authorization by public deeds, which are valid and governed by the Brazilian Civil Code, presented in the chart above as “Municipalities with expired contracts”. Revenue from sanitation services (excluding construction revenue) of this municipality totaled R$ 1,600 in the three-month period ended March 31, 2021 (R$ 1,561 in the three-month period ended March 31, 2020) and the total amount of intangible and contract assets for this municipality was R$ 83,736 as of March 31, 2021 (R$ 77,014 as of December 31, 2020).

The Company's shares have been listed in the Novo Mercado segment of B3 under ticker SBSP3 since April 2002 and on the New York Stock Exchange (NYSE) as American Depositary Receipts (“ADRs”) Level III, under ticker SBS, since May 2002.

Since 2008, the Company has been setting up partnerships with other companies, which resulted in the following companies: Sesamm, Águas de Andradina, Aquapolo Ambiental, Águas de Castilho, Attend Ambiental and Paulista Geradora de Energia. Although SABESP has no majority interest in the capital stock of these companies, the shareholders’ agreements provide for the power of veto and casting vote in certain issues jointly with associates, indicating the shared control in the management of investees.

Economic instability worsened by COVID-19

The global economic instability worsened with the outbreak of a new coronavirus in early 2020, which was considered pandemic by the World Health Organization (WHO). Accordingly, SABESP has been taking several measures to ensure the continuity and quality of the services provided to the population, which have become even more essential. It is worth noting that any interruption in water supply by a basic sanitation company may compromise compliance with WHO’s recommendations for everyone to keep good hygiene habits, such as washing hands correctly and more frequently.

The Company implemented a number of preventive measures so that its employees are not exposed to situations of risks, such as: (i) employees from the administrative sectors (especially) and those with more than 60 years of age are working under a remote system; (ii) restriction of domestic and international trips; (iii) anticipation of the influenza and pneumonia vaccination campaign; (iv) closing of all branches that assist the public, concentrating services in the digital channels in order to protect customers and employees; among others.

Some of the economic and financial consequences arising from the COVID-19 pandemic include the following adverse effects in the first quarter of 2021:

(i) high exchange volatility and increase in new funding costs;

(ii) reduction in the billed volume in the public, commercial and industrial categories, which have higher average tariffs, leading to a decrease in total average tariff and, consequently, in revenue from customers in the commercial, industrial and public categories, in an estimated amount of R$ 186.7 million from January to March 2021;

(iii) increase in default and in the expectation of higher future losses of users in the private and commercial/industrial categories, leading to a provisioning of estimated losses in the amount of R$ 121.1 million from January to March 2021; and

(iv) Suspension of water supply cut-off and renegotiation of debts, including those arising from agreements executed during the pandemic, from February 3, 2021 to April 30, 2021, for users in the commercial and industrial categories, located in the operated municipalities that are in the red and orange phases of the São Paulo Plan/COVID-19. Existing debts, including those renegotiated, will be exempted from fines and interest.

(v) The payment of 50% of the Regulation, Control and Oversight Fee (TRCF) was postponed from May to December 2020, to be settled in 24 installments beginning January 2021, whereby R$ 3,003 was paid in the first quarter of 2021.

Opposed to the adverse effects, there were positive effects with the increase in revenues from residential customers, in an estimated amount of R$ 136.6 million from January to March 2021.

Because of the adverse effects, in order to preserve the economic and financial sustainability, the Company adjusted budget by reducing expenses and, on April 27, 2020, July 10 and December 15, 2020, held the 25th, 26th and 27th issue debentures in the amounts of R$ 1.45 billion, R$ 1.05 billion and R$ 1.00 billion, respectively. Also on December 7, 2020, it raised R$ 0.95 billion with IDB INVEST. As of April 28, 2020, the Company concluded the translation of a debt contracted with the Inter-American Development Bank (IDB), from US$ 494.6 million to R$ 2,810.9 million, reducing its exposure to the variation of the US dollar. In addition, as of September 30, 2020, the Company early amortized

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Eurobonds in the amount of R$ 1,910.1 million (US$ 357.8 million) to further reduce its currency exposure.

Management expects that the initiatives taken in view of the impacts mentioned, in addition to improved water security, due to the works carried out, will be sufficient to meet its commitments and not compromise the Company’s operating and financial continuity.

New Legal Sanitation Framework

On July 15, 2020, the Brazilian President sanctioned Federal Law 14,026/2020, known as New Legal Framework for Basic Sanitation. The new law expands competition in the sector, by extinguishing program contracts.

Additionally, the New Legal Framework imposes performance goals to reach 99% of the population served with drinking water and 90% with sewage collection and treatment by December 31, 2033, encouraging operators to increase efficiency. It also granted the National Water Agency (ANA) with authority to edit reference rules to regulate sanitation with a view to minimize regulatory uncertainties, thus creating a more stable and attractive environment for investments in the sector.

In this new context, the Company understands it has some competitive advantages: i) it has contracts that already include goals that meet or even anticipate those defined by the New Legal Framework; ii) it has access to public capital and major exposure to the private capital market, favoring the maintenance and/or expansion of the operated base; iii) it has high governance level; and iv) it has contracts signed with the granting authority that ensure 95% of revenue.

Approvals

The interim financial information was approved by the Board of Directors on May 13, 2021.

2 Basis of preparation and presentation of the financial statements

Presentation of the Interim Financial Information

The interim financial information as of March 31, 2021, was prepared based on the provisions of CPC 21 (R1) – Interim Financial Information and the international standard IAS 34 – Interim Financial Reporting, issued by the International Accounting Standards Board (IASB), applicable to the preparation of Quarterly Information Form – ITR and they are fairly presented consistent with the rules issued by the Brazilian Securities and Exchange Commission (CVM). Accordingly, this interim information takes into consideration the Official Letter CVM/SNC/SEP 003 of April 28, 2011, which allows the entities to present selected notes to the financial statements, in cases of redundant information already disclosed in the Annual Financial Statements. The interim financial information for March 31, 2021, therefore, does not include all the notes and reporting required by the annual financial statements, and accordingly, shall be read jointly with the Annual Financial Statements as of December 31, 2020, prepared pursuant to the International Financial Reporting Standards – IFRS, issued by the International Accounting Standards Board – IASB and pursuant to the accounting practices adopted in Brazil, which observe the pronouncements issued by the Brazilian Accounting Pronouncements Committee - CPC. Therefore, in this interim financial information, the notes below were either not presented or are not as detailed as those in the annual financial statements (according to numerical references):

i. Summary of significant accounting policies (Note 3);

ii. Changes in accounting practices and disclosures (Note 4);

iii. Risk management – financial instruments (Note 5.4);

iv. Key accounting estimates and judgments (Note 6);

v. Related-party balances and transactions (Note 11);

vi. Investments (Note 12);

vii. Intangible assets (Note 15);

viii. Borrowings and financing (Note 17);

ix. Deferred taxes and contributions (Note 19);

x. Provisions (Note 20);

xi. Employees benefits (Note 21);

xii. Equity (Note 24);

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xiii. Insurance (Note 27);

All material information related to the interim financial information, and this information alone, is being disclosed and corresponds to the information used by the Company’s Management in its administration.

The amounts disclosed in the Notes are in thousands of reais, unless otherwise stated.

3 Summary of significant accounting policies

The accounting policies used in the preparation of the interim financial information for March 31, 2021 are consistent with those used to prepare the Annual Financial Statements for the year ended December 31, 2020, disclosed on Note 3 of such financial statements.

4 Risk management

4.1 Financial Risk Management Financial risk factors

The Company's activities are affected by the Brazilian economic scenario, making it exposed to market risk (exchange rate and interest rate), credit risk and liquidity risk. The financial risk management is focused on the unpredictability of financial markets and seeks to minimize potential adverse effects on the financial performance.

The Company has not utilized derivative instruments in any of the reported periods.

(a) Market risk

(b) Exchange risk

Currency exposure implies market risks associated with currency fluctuations, since the Company has foreign currency-denominated liabilities, arising from long-term funding, in development institutions, at lower interest rates, in US dollar and yen.

The management of currency exposure considers several current and projected economic factors, besides market conditions.

This risk arises from the possibility that the Company may incur in losses due to exchange rate fluctuations that would impact liability balances of foreign currency-denominated borrowings and financing and related financial expenses. The Company does not maintain hedge or swap contracts or any derivative financial instrument to hedge against this risk.

Part of the financial debt is indexed to the US dollar and Yen, in the total amount of R$ 3,569,168 as of March 31, 2021 (R$ 3,563,170 as of December 31, 2020). The exposure to exchange risk is as follows:

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March 31, 2021 — Foreign currency R$ December 31, 2020 — Foreign currency R$
Borrowings and financing – US$ 162,539 926,033 167,479 870,338
Borrowings and financing – Yen 51,141,267 2,634,798 52,969,560 2,671,255
Interest and charges from borrowings and financing – US$ 3,113 5,540
Interest and charges from borrowings and financing – Yen 5,224 16,037
Total exposure 3,569,168 3,563,170
Borrowing cost – US$ (13,885) (12,342)
Borrowing cost – Yen (2,917) (2,966)
Total foreign currency-denominated borrowings (Note 16) 3,552,366 3,547,862

The 0.1% increase in the balance of the foreign-currency denominated debt from December 31, 2020 to March 31, 2021 was mainly impacted by the appreciation of the U.S. dollar and Yen against the Brazilian real, as follows:

March 31, — 2021 December 31, — 2020 Var.
US$ R$ 5.6973 R$ 5.1967 9.6%
Yen R$ 0.05152 R$ 0.05043 2.2%

This increase was partially offset by the amortization of installment payments of foreign currency denominated debt contractually provided for.

From January to March 2021, the Company recorded expenses of R$ 137,573 (R$ 1,796,539 from January to March 2020) from the currency variation of the borrowings and financing agreements. See Note 28. As of March 31, 2021, if the Brazilian real had depreciated or appreciated by 10 percentage points, in addition to the impacts already mentioned above, against the US dollar and Yen with all other variables held constant, the effects on results before taxes on the three-month period ended March 31, 2021 would have been R$ 356,917 (R$ 805,550 for the three-month period ended March 31, 2020), lower or higher, mainly as a result of exchange losses or gains on the translation of foreign currency-denominated borrowings and financing.

Scenario I below presents the effect in income statements for the next 12 months, considering the projected rates of the US dollar and the Yen. Considering the other variables as remaining constant, the impacts for the next 12 months are shown in scenarios II and III with possible depreciations of 25% and 50%, respectively, in the Brazilian real.

The Company understands that scenarios 25% and 50% are reasonable, given the instability of the real against the U.S. dollar and the Yen. Depreciation came to 9.6% and 2.2%, respectively, in 2021.

Scenario I (Probable) Scenario II (+25%) Scenario III (+50%)
(*)
Net currency exposure as of March 31, 2021 in US$ - Losses 162,539 162,539 162,539
US$ rate as of March 31, 2021 5.6973 5.6973 5.6973
Exchange rate estimated according to the scenario 5.3100 6.6375 7.9650
Differences between the rates 0.3873 (0.9402) (2.2677)
Effect on net financial result R$ - gain/(loss) 62,951 (152,819) (368,590)
Net currency exposure as of March 31, 2021 in Yen - Losses 51,141,267 51,141,267 51,141,267

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Yen rate as of March 31, 2021 0.05152 0.05152 0.05152
Exchange rate estimated according to the scenario 0.05176 0.06470 0.07764
Differences between the rates (0.00024) (0.01318) (0.02612)
Effect on net financial result R$ - gain/(loss) (12,274) (674,042) (1,335,810)
Total effect on net financial result in R$ - gain/(loss) 50,677 (826,861) (1,704,400)
(*) For the probable scenario in US dollar, the exchange rate estimated for March 31, 2022 was used, pursuant to the BACEN Focus Report of March 31, 2021. For the Yen, the exchange estimated for March 31, 2022 was used, according to B3’s Reference Rates report of March 31, 2021.

Interest rate risk

This risk arises from the possibility that the Company could incur losses due to fluctuations in interest rates, increasing the financial expenses related to borrowings and financing.

The Company has not entered into any derivative contract to hedge against this risk; however it continually monitors market interest rates, in order to evaluate the possible need to replace its debt.

The table below provides the borrowings and financing subject to variable interest rate:

March 31, 2021 December 31, 2020
CDI (i) 7,646,313 7,836,988
TR (ii) 1,618,893 1,619,416
IPCA (iii) 2,118,953 2,176,547
TJLP (iv) 1,457,645 1,517,657
LIBOR (v) 926,035 870,337
Interest and charges 173,612 164,439
Total 13,941,451 14,185,384

(i) CDI - ( Certificado de Depósito Interbancário ), an interbank deposit certificate

(ii) TR – Interest Benchmark Rate

(iii) IPCA – ( Índice Nacional de Preços ao Consumidor Amplo ), a consumer price index

(iv) TJLP – ( Taxa de Juros a Longo Prazo ), a long-term interest rate index

(v) LIBOR – London Interbank Offered Rate

Another risk to which the Company is exposed is the mismatch of inflation adjustment indices of its debts with those of its service revenues. Tariff adjustments of services provided do not necessarily follow the increases in the inflation indexes to adjust borrowings, financing and interest rates affecting indebtedness.

On March 31, 2021, if interest rates on borrowings and financing had been 1 percentage point higher or lower with all other variables held constant, the effects on profit before taxes for the three-month period ended March 31, 2021 would have been R$ 139,415 (R$ 95,286 for the three-month period ended March 31, 2020), lower or higher, mainly as a result of lower or higher interest expense on floating rate borrowings and financing.

(c) Credit Risk

Credit risk is related to cash and cash equivalents, financial investments, as well as credit exposures to wholesale basis and retail customers, including accounts receivable, restricted cash and accounts receivable from related parties. Credit risk exposure to customers is mitigated by sales to a dispersed base.

The maximum exposure to credit risk as of March 31, 2021 is the carrying amount of instruments classified cash and cash equivalents, financial investments, restricted cash, trade receivables and accounts receivable from related parties in the reporting date. See additional information in Notes 6, 7, 8, 9 and 10.

Regarding the financial assets held with financial institutions, the credit quality was assessed by reference to external credit ratings (if available) or to historical information about the bank’s default rates. For the credit quality of the banks,

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such as deposits and financial investments, the Company assesses the rating published by three main international agencies (Fitch, Moody's and S&P), as follows:

Banks Fitch Moody's Standard Poor's
Banco do Brasil S/A AA(bra) Aa1.br -
Banco Santander Brasil S/A - Aaa.br brAAA
Brazilian Federal Savings Bank AA(bra) Aa1.br brAAA
Banco Bradesco S/A AAA(bra) Aa1.br brAAA
Banco Itaú Unibanco S/A AAA(bra) Aa1.br brAAA
Banco BV - Aa3.br brAAA
Banco BTG Pactual S/A AA(bra) Aa2.br brAA+

The rating assessment disclosed by Fitch for deposit transactions and financial investments in local currency (R$ - domestic rating) is as follows:

March 31, 2021 December 31, 2020
Cash and cash equivalents and financial investments
AA(bra) 2,341,585 2,662,685
AAA(bra) 904,265 891,243
Others (*) 262,571 253,619
3,508,421 3,807,547

(*) As of March 31, 2021, R$ 254,075 (R$ 253,066 as of December 31, 2020), referring to Banco BV, checking accounts and financial investments, which are not rated by Fitch, are included in this category. The investment in Banco BV is due to the fundraising structure defined for the 25th issue debentures, with settlement on April 27, 2020, which required the need to maintain the funds raised from each institution invested for at least 60 days, provided that the yield was higher than SABESP's opportunity cost at that moment.

(d) Liquidity risk

Liquidity is primarily reliant upon cash provided by operating activities and borrowings and financing obtained in the local and international capital markets, as well as the payment of debts. The management of this risk considers the assessment of its liquidity requirements to ensure it has sufficient cash to meet its operating and capital expenditures needs.

The funds held are invested in interest-bearing current accounts, time deposits and securities, selecting instruments with appropriate maturity or liquidity sufficient to provide margin as determined by projections mentioned above.

The table below shows the financial liabilities, per relevant maturities, including the installments of principal and future interest to be paid according to the agreement. For agreements with floating interest rate, the interest rates used correspond to the base date of March 31, 2021.

April to December 2021 2022 2023 2024 2025 2026 onwards Total
March 31, 2021
Liabilities
Borrowings and financing 2,867,356 2,156,097 2,167,892 2,292,848 1,782,684 10,317,643 21,584,520
Suppliers 250,019 - - - - - 250,019
Services payable 617,713 - - - - - 617,713
Public-Private Partnership - PPP 320,359 427,459 427,772 386,115 357,382 4,189,964 6,109,051
Program Contract Commitments 120,683 34,043 34,043 1,064 1,064 13,358 204,255

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Cross default

The Company has borrowings and financing agreements including cross default clauses, i.e., the early maturity of any debt may imply the early maturity of these agreements. The indicators are continuously monitored in order to avoid the execution of these clauses, and the most restrictive are shown in Note 16 (c).

(e) Sensitivity analysis on interest rate risk

The table below shows the sensitivity analysis of the financial instruments, prepared in accordance with CPC 40, In order to evidence the balances of main financial assets and liabilities, calculated at a rate projected for the twelve-month period after March 31, 2021, or until the final settlement of each contract, whichever is shorter, considering a probable scenario (Scenario I), appreciation of 25% (Scenario II) and 50% (Scenario III).

The purpose of the sensitivity analysis is to measure the impact of changes in the market over the financial instruments, considering constant all other variables. In the time of settlement the amounts can be different from those presented, due to the estimates used in the measurement.

March 31, 2021 — Indicators Exposure Scenario I (Probable) (i) Scenario II 25% Scenario III 50%
Assets
CDI 3,404,102 6.0000%(*) 7.5000% 9.0000%
Financial income 204,246 255,308 306,369
Liabilities
CDI (7,646,313) 6.0000%(*) 7.5000% 9.0000%
Interest to be incurred (458,779) (573,474) (688,168)
CDI net exposure (4,242,211) (254,533) (318,166) (381,799)
Liabilities
TR (1,618,893) 0.0001%(***) 0.0001% 0.0002%
Expenses to be incurred (2) (2) (3)
IPCA (2,118,953) 3.5100%(*) 4.3875% 5.2650%
Expenses to be incurred (74,375) (92,969) (111,563)
TJLP (1,457,645) 4.3900%(*) 5.4875% 6.5850%
Interest to be incurred (63,991) (79,988) (95,986)
LIBOR (926,035) 0.2130%(**) 0.2663% 0.3195%
Interest to be incurred (1,972) (2,466) (2,959)
Total expenses to be incurred, net (394,873) (493,591) (592,310)

(*) Source: CDI and IPCA (BACEN Focus Report, March 31, 2021) and long-term interest rate as of March 31, 2021 (BACEN).

(**) Source: B3.

(***) Source: B3.

(i) Refers to the scenario of interest to be incurred for the 12 months as of March 31, 2021 or until the maturity of the agreements, whichever is shorter.

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4.2 Capital management

The objectives when managing capital are ensuring its ability to increase investments in infrastructure, providing returns for shareholders and benefits for other stakeholders, and maintaining an optimal capital structure to reduce the cost of capital.

Capital is monitored based on the leverage ratio, which corresponds to net debt divided by total capital (shareholders and creditor’s equity). Net debt corresponds to total borrowings and financing less cash and cash equivalents and financial investments. Total capital is calculated as total equity plus net debt, as shown in the statement of financial position.

March 31, 2021 December 31, 2020
Total borrowings and financing (Note 16) 17,019,422 17,258,624
(-) Cash and cash equivalents (Note 6) (864,482) (396,401)
(-) Financial investments (Note 7) (2,643,939) (3,411,146)
Net debt 13,511,001 13,451,077
Total equity 23,290,562 22,793,704
Total (shareholders plus creditor’s equity) 36,801,563 36,244,781
Leverage rate 37% 37%

As of March 31, 2021, the leverage rate remained at 37% compared to December 31, 2020.

4.3 Fair value estimates

The Company considers that balances from trade receivables (current) and trade payables by carrying amount less impairment approximate their fair values, considering the short maturity. Long-term trade receivables also approximate their fair values, as they will be adjusted by inflation and/or will bear contractual interest rates over time.

4.4 Financial instruments

The Company did not have financial assets classified as fair value through other comprehensive income and fair value through profit or loss. The financial instruments included in the amortized cost category comprise cash and cash equivalents, financial investments, restricted cash, trade receivables, balances with related parties, other assets and balances receivable from the Water National Agency (ANA), accounts payable to suppliers, borrowings and financing, services payable, balances payable deriving from the Public Private Partnership (PPP) and program contract commitments, which are non-derivative financial assets and liabilities with fixed or determinable payments, not quoted in an active market, except for cash equivalents and financial investments.

The estimated fair values of financial instruments are as follows:

Financial Assets

March 31, 2021 — Carrying amount Fair value December 31, 2020 — Carrying amount Fair value
Cash and cash equivalents 864,482 864,482 396,401 396,401
Financial investments 2,643,939 2,643,939 3,411,146 3,411,146
Restricted cash 36,091 36,091 35,742 35,742

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Trade receivables 2,533,532 2,533,532 2,450,986 2,450,986
ANA 26,309 26,309 26,463 26,463
Other receivables 293,311 293,311 246,110 246,110

Additionally, SABESP has financial assets receivable from related parties, totaling R$ 803,779 as of March 31, 2021 (R$ 806,645 as of December 31, 2020), which were calculated in accordance with the conditions negotiated between the related parties. The conditions and additional information related to these financial instruments are disclosed in Note 10. Part of this balance, totaling R$ 722,152 (R$ 732,391 as of December 31, 2020), refers to reimbursement of additional retirement and pension plan – G0, indexed by IPCA plus simple interest of 0.5% p.m. On the transaction date, this interest rate approximated that of National Treasury Notes (NTN-b), with a term similar to the terms of related-party transactions.

Financial Liabilities

March 31, 2021 — Carrying amount Fair value December 31, 2020 — Carrying amount Fair value
Borrowings and financing 17,019,422 17,380,464 17,258,624 17,702,649
Suppliers 250,019 250,019 263,741 263,741
Services payable 617,713 617,713 453,750 453,750
Program Contract Commitment 191,848 191,848 231,480 231,480
Public-Private Partnership - PPP 3,146,325 3,146,325 3,175,273 3,175,273

The criteria adopted to obtain the fair values of borrowings and financing, in preparing the interim financial information as of March 31, 2021, are consistent with those adopted in the Annual Financial Statements for the fiscal year ended December 31, 2020.

Financial instruments referring to financial investments and borrowings and financing are classified as Level 2 in the fair value hierarchy.

Considering the nature of other financial instruments, assets and liabilities, the balances recognized in the statement of financial position approximate the fair values, except for borrowings and financing, considering the maturities close to the end of the reporting date, comparison of contractual interest rates with market rates in similar operations at the end of the reporting period, their nature and maturity terms.

5 Key accounting estimates and judgments

The preparation of the interim financial information requires Management to make judgements (except for those that involve assumptions) that have a significant impact on the amounts recognized based on experience and other factors deemed as relevant, which affect the values of assets and liabilities and present results that may differ from the actual ones.

The Company makes estimates and assumptions concerning the future, which are reviewed on a timely basis. Such accounting estimates, by definition, may differ from actual results. The effects from the reviews of the accounting estimates are recognized in the period in which the estimates are reviewed.

The Company evaluated the main accounting policies that involve judgment, except for that that involve estimate, and concluded that none of them have a significant effect.

The areas that require a higher level of judgment and greater complexity, as well as those in which assumptions and estimates are significant for the quarterly information are: (i) allowance for doubtful accounts; (ii) intangible assets arising from concession agreements and program contracts; (iii) pension plan obligations - pension plans; (iv) deferred income tax and social contribution; (v) provisions; and (vi) unbilled revenue.

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6 Cash and cash equivalents

March 31, 2021 December 31, 2020
Cash and banks 90,885 74,033
Cash equivalents 773,597 322,368
Total 864,482 396,401

Cash and cash equivalents include cash, bank deposits and high-liquidity short-term financial investments, mainly represented by repurchase agreements, fund shares (accruing CDI interest rates) and CDBs, whose original maturities or intention of realization are lower than three months, which are convertible into a cash amount and subject to an insignificant risk of change in value.

As of March 31, 2021, the average yield of financial investments corresponded to 96.00% of CDI (95.82% as of December 31, 2020).

7 Financial investments

The Company has financial investments in CDB, with daily liquidity, which it does not intend to use in the next three months, as shown below:

March 31, 2021 December 31, 2020
Banco BV 254,075 253,066
Banco Itaú S/A 355,711 354,296
Banco Bradesco S/A 508,156 506,136
Banco BTG Pactual S/A 355,713 354,299
Banco do Brasil S/A 1,170,284 1,943,349
2,643,939 3,411,146

As of March 31, 2021, the average yield of financial investments corresponds to 99.80% of CDI (98.95% as of December 31, 2020).

8 Restricted cash

March 31, 2021 December 31, 2020
Agreement with the São Paulo municipal government (i) 29,700 29,599
Brazilian Federal Savings Bank – escrow deposits (ii) 304 272
Other 6,087 5,871
36,091 35,742

(i) Refers to the amount deducted from the 7.5% of revenue earned in the municipality to the Municipal Fund for Environmental Sanitation and Infrastructure, corresponding to eventual amounts unpaid by direct management bodies, foundations and government agencies, as established in the agreement entered into with São Paulo municipal government; and

(ii) Refers to savings account for receiving escrow deposits regarding lawsuits with final and unappealable decisions in favor of the Company, which are blocked as per contractual clause.

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9 Trade receivables

(a) Statement of financial position details

March 31, 2021 December 31, 2020
Private sector:
General (i) and special customers (ii) 1,761,129 1,663,738
Agreements (iii) 450,031 398,367
2,211,160 2,062,105
Government entities:
Municipal 481,961 473,201
Federal 6,337 3,859
Agreements (iii) 352,616 333,740
840,914 810,800
Wholesale customers – Municipal governments: (iv)
Mogi das Cruzes 3,531 3,582
São Caetano do Sul 16,139 18,808
Total wholesale customers – Municipal governments 19,670 22,390
Unbilled supply 677,625 713,310
Subtotal 3,749,369 3,608,605
Allowance for doubtful accounts (1,215,837) (1,157,619)
Total 2,533,532 2,450,986
Current 2,264,723 2,204,029
Noncurrent 268,809 246,957
2,533,532 2,450,986

(i) General customers - residential and small and mid-sized companies;

(ii) Special customers – large consumers, commercial industries, condominiums and special billing customers (fixed demand agreements, industrial waste, wells, among others);

(iii) Agreements - installment payments of past-due receivables, plus monetary restatement and interest, according to the agreements; and

(iv) Wholesale basis customers - municipal governments. This balance refers to the sale of treated water to municipalities, which are responsible for distributing to, billing and charging final customers.

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(b) The aging of trade receivables is as follows:

March 31, 2021 December 31, 2020
Current 1,801,837 1,793,104
Past-due:
Up to 30 days 380,938 340,760
From 31 to 60 days 196,586 177,103
From 61 to 90 days 135,010 120,488
From 91 to 120 days 97,336 88,323
From 121 to 180 days 151,944 113,060
From 181 to 360 days 84,652 82,365
Over 360 days 901,066 893,402
Total past-due 1,947,532 1,815,501
Total 3,749,369 3,608,605

The increase in the past-due balance was mainly due to higher default of the private sector.

(c) Allowance for doubtful accounts

January to March 2021 January to March 2020
Balance at the beginning of the period 1,157,619 1,042,015
Additions 68,026 126,487
Recoveries (9,808) (7,497)
Balance at the end of the period 1,215,837 1,161,005
Reconciliation of estimated / historical losses at the result January to March 2021 January to March 2020
Write-offs (62,386) (37,768)
(Losses)/reversal with state entities – related parties (447) (731)
(Losses) with private sector/government entities (68,026) (126,487)
Recoveries 9,808 7,497
Amount recorded as expense (Note 27) (121,051) (157,489)

Expenses with estimated losses fell from R$ 157,489 from January to March 2020 to R$ 121,051 from January to March 2021, due to higher provisioning in 2020 arising from higher default and the worsening of expected future losses because of the beginning of the COVID-19 pandemic.

The Company does not have customers representing 10% or more of its total revenues.

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10 Related-party balances and transactions

(a) São Paulo State

(i) Accounts receivable, interest on capital, revenue and expenses

March 31, 2021 December 31, 2020
Accounts receivable
Current:
Sanitation services 118,045 109,078
Allowance for losses (39,574) (39,127)
Reimbursement of additional retirement and pension benefits paid (G0):
- Monthly flow (payments) 7,353 22,726
- GESP Agreement – 2015 79,422 75,377
Total current 165,246 168,054
Noncurrent:
Agreement for the installment payment of sanitation services 3,156 4,303
Reimbursement of additional retirement and pension benefits paid (G0):
- GESP Agreement – 2015 635,377 634,288
Total noncurrent 638,533 638,591
Total receivables from shareholders 803,779 806,645
Assets:
Sanitation services 81,627 74,254
Reimbursement of additional retirement and pension benefits paid (G0) 722,152 732,391
Total 803,779 806,645
Liabilities:
Interest on capital payable to related parties 116,180 116,180

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January to March 2021 January to March 2020
Revenue from sanitation services 124,405 141,885
Payments from related parties (112,223) (149,495)
Receipt of reimbursement referring to Law 4,819/1958 (54,180) (54,202)

(ii) Disputed amounts

As of March 31, 2021 and 2020, the disputed amounts between SABESP and the São Paulo State, referring to additional retirement and pension benefits paid (Law 4,819/1958), totaled R$ 1,300,347 and R$ 1,281,409, respectively, for which allowances for doubtful accounts were recorded for such amounts.

(iii) Actuarial liability

The Company recognized an actuarial liability corresponding to additional retirement and pension benefits paid to employees, retired employees and pensioners of the G0 Plan. As of March 31, 2021 and December 31, 2020, the amounts corresponding to such actuarial liability were R$ 2,549,063 and R$ 2,549,541, respectively. For detailed information on additional retirement and pension benefits, see Note 21.

(b) Use of Reservoirs – EMAE

Empresa Metropolitana de Águas e Energia S.A. (EMAE) planned to receive for the credit and obtain financial compensation for alleged past and future losses in electricity generation, due to water collection, and compensation for costs already incurred and to be incurred with the operation, maintenance and inspection of the Guarapiranga and Billings reservoirs used by SABESP in its operations.

On October 28, 2016, the Company entered into an agreement based on a Private Transaction Agreement and Other Adjustments aimed to settle the disputes fully and completely and SABESP will continue using the reservoirs.

As of March 31, 2021, the balance of the agreement totaled R$ 18,066 and R$ 78,919 (R$ 17,255 and R$ 73,660 as of December 31, 2020), recorded in Other liabilities, under current and noncurrent liabilities, respectively.

(c) Agreements with reduced tariff for State Entities that join the Rational Water Use Program (PURA)

The Company has signed agreements with government entities related to the São Paulo State where it operates that benefit from a reduction of 25% in the tariff of water supply and sewage services when they are not in default. These agreements provide for the implementation of the rational water use program, which takes into consideration the reduction in water consumption.

(d) Guarantees

The São Paulo State provides guarantees for some of the Company’s borrowings and financing and does not charge any fee for such guarantees.

(e) Personnel assignment agreement among entities related to the São Paulo State Government

The Company has personnel assignment agreements with entities related to the São Paulo State Government, whose expenses are fully charged. From January to March 2021, expenses with employees assigned to other state entities totaled R$ 157 (R$ 688 from January to March 2020).

No expenses with employees from other entities assigned to the Company were recorded from January to March 2021 (R$ 80 from January to March 2020).

(f) Non-operating assets

As of March 31, 2021 and December 31, 2020, the Company had land and lent structures amounting to R$ 3,613.

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(g) SABESPREV

The Company sponsors a private defined benefit pension plan (G1 Plan), which is operated and administered by SABESPREV. The net actuarial liability recognized as of March 31, 2021 totaled R$ 316,132 (R$ 319,053 as of December 31, 2020), according to Note 21.

(h) Compensation of Management Key Personnel and Fiscal Council

Expenses related to the compensation of the members of Management and Fiscal Council totaled R$ 1,594 and R$ 1,583 from January to March 2021 and 2020, respectively.

An additional amount of R$ 360, referring to the executive officers’ bonus program, was recoded from January to March 2021 and 2020, respectively.

(i) Loan agreement through credit facility

The Company holds interest in certain Special Purpose Entities (SPEs), not holding the majority interest but with cast vote and power of veto in some issues, with no ability to use such power of veto in a way to affect returns over investments. Therefore, these SPEs are considered for accounting purposes as jointly arrangements.

The Company entered into a loan agreement through credit facility with the SPE Aquapolo Ambiental S/A to finance the operations of this company, until the borrowings and financing requested with financial institutions is granted.

As of March 31, 2021, the balance of principal and interest of this agreement totaled R$ 9,494 and R$ 24,053, recorded under current assets and noncurrent assets, respectively, in “Other assets” (R$ 9,420 and R$ 23,866, respectively, as of December 31, 2020), at CDI + 1.2% p.a.

The loan originally matured on April 30, 2015 but was extended to October 30, 2015. On November 25, 2015, a new amendment changed the payment schedule for three annual installments, the first of which maturing on December 30, 2021 and the last on December 30, 2023.

(j) “Se Liga na Rede” (Connect to the Network Program)

The São Paulo State enacted the State Law 14,687/2012, creating the pro-connection program, destined to financially subsidize the execution of household branches necessary to connect to the sewage collecting networks, in low-income households, which agreed to adhere to the program. The Law was regulated by Decree 58,280/2012, and is effective for eight years. During the Program, R$ 52,174 was reimbursed by the São Paulo State. As of March 31, 2021, there were no balances receivable from third parties.

11 Investments

The Company holds interest in certain Special Purpose Entities (SPE). Although SABESP has no majority shares of its investees, the shareholders’ agreement provides for the power of veto in certain management issues, however, with no ability to use such power of veto in a way to affect returns over investments, indicating participating shared control (joint venture – CPC 19 (R2)).

The Company holds equity interest valued by the equity accounting in the following investees:

Equity — March 31, 2021 December 31, 2020 Profit (loss) for the period — January to March 2021 (*) January to March 2020
Sesamm 53,143 51,514 1,629 - 1,744
Águas de Andradina 30,080 29,576 593 (89) (1,717)
Águas de Castilho 8,896 8,533 348 15 437
Attend Ambiental 20,804 11,409 2,012 7,383 2,534
Aquapolo Ambiental 48,052 41,903 6,149 - 4,851
Paulista Geradora de Energia 6,561 6,692 (131) - (8)

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Investments — March 31, 2021 December 31, 2020 Equity result — January to March 2021 (*) January to March 2020 Interest percentage — March 31, 2021 December 31, 2020
Sesamm 19,133 18,546 587 - 628 36% 36%
Águas de Andradina 9,024 8,873 178 (27) (515) 30% 30%
Águas de Castilho 2,668 2,560 104 4 132 30% 30%
Saneaqua Mairinque 1 - - - - (185) 4.6% 4.6%
Attend Ambiental 9,362 5,134 906 3,322 1,140 45% 45%
Aquapolo Ambiental 23,545 20,532 3,013 - 2,377 49% 49%
Paulista Geradora de Energia 1,640 1,673 (33) - (2) 25% 25%
Total 65,372 57,318 4,755 3,299 3,575
Other investments 6,099 6,099
Total 71,471 63,417

(*) Refer to changes in the equity of investees, as their financial statements for the year ended December 31, 20120 were issued after disclosure of SABESP’s financial statements.

(1) On August 20, 2020, SABESP discontinued the equity accounting method for the investment made in Saneaqua Mairinque, recording R$ 5,734 under “Other investments”.

12 Investment Properties

December 31, 2020 Depreciation March 31, 2021
Investment properties 46,274 (12) 46,262
December 31, 2019 Depreciation March 31, 2020
Investment properties 47,562 (12) 47,550

As of March 31, 2021, the market value of these properties was approximately R$ 386,000 (R$ 383,000 as of December 31, 2020) .

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13 Contract asset

Contract Asset (works in progress) is the right to consideration in exchange for goods or services transferred to customers. As established by CPC 47 – Revenue from Contracts with Customers, assets conditioned to the concession under construction, recorded under the scope of ICPC 01 (R1) – Concession Agreements, must be classified as Contract Asset during the construction period and transferred to Intangible Assets only after the conclusion of the works.

A contract asset is initially designated at fair value and includes borrowing costs capitalized during the period when the asset is under construction, based on the weighted average rate of borrowings in effect on the capitalization date. For further information on the capitalization of interest and construction margin, recorded during the construction period, see Note 14.

| | December 31, 2020 | Additions (i) | Transfers | Transfers of works to intangible
assets (ii) | March 31, 2021 (iii) |
| --- | --- | --- | --- | --- | --- |
| Total contract asset | 7,969,164 | 1,084,501 | 292 | (755,954) | 8,298,003 |

| | December 31, 2019 | Additions | Transfers | Transfers of works to intangible
assets | March 31, 2020 |
| --- | --- | --- | --- | --- | --- |
| Total contract asset | 7,617,714 | 681,120 | 35 | (308,994) | 7,989,875 |

(i) The largest additions of the period are located in the municipalities of São Paulo, São Bernardo do Campo and Praia Grande, in the amounts of R$ 629 million, R$ 40 million and R$ 33 million, respectively.

(ii) The largest transfers of the period are located in the municipalities of São Paulo, São Bernardo do Campo and Caieiras, in the amounts of R$ 528 million, R$ 25 million and R$ 10 million, respectively.

(iii) The largest works are located in the municipalities of São Paulo, Praia Grande and São Bernardo do Campo, in the amounts of R$ 3,155 million, R$ 546 million and R$ 461 million, respectively.

As of March 31, 2020, the contract asset included R$ 276,893, recorded as lease (R$ 276,893 as of December 31, 2020). Leases are part of construction costs; however, constructions are still in progress.

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14 Intangible assets

(a) Statement of financial position details

March 31, 2021 — Cost Accumulated amortization Net December 31, 2020 — Cost Accumulated amortization Net
Intangible right arising from:
Concession agreements – equity value 674,460 (192,323) 482,137 671,904 (188,129) 483,775
Concession agreements – economic value 1,454,919 (736,845) 718,074 1,446,261 (711,596) 734,665
Program contracts 23,376,415 (7,009,708) 16,366,707 23,160,119 (6,799,812) 16,360,307
Program contracts – commitments 1,709,757 (352,075) 1,357,682 1,709,757 338,834 1,370,923
Service contracts – São Paulo 21,080,650 (5,941,664) 15,138,986 20,579,676 (5,707,072) 14,872,604
Software license of use 1,004,375 (461,078) 543,297 978,085 (437,460) 540,625
Right of use – Other assets 197,919 (105,902) 92,017 141,782 (99,106) 42,676
Total 49,498,495 (14,799,595) 34,698,900 48,687,584 (14,282,009) 34,405,575

(b) Changes

December 31, 2020 Additions Transfer of contract asset Transfers Write-offs and disposals Amortization March 31, 2021
Intangible right arising from:
Concession agreements - equity value (*) 483,775 - 2,781 23 (136) (4,306) 482,137
Concession agreements – economic value 734,665 - 8,989 - (174) (25,406) 718,074
Program contracts (*) 16,360,307 3,315 216,100 407 (1,122) (212,300) 16,366,707
Program contracts – commitments 1,370,923 - - - - (13,241) 1,357,682
Service contracts – São Paulo 14,872,604 2,745 501,794 427 (1,213) (237,371) 15,138,986
Software license of use 540,625 - 26,290 - - (23,618) 543,297
Right of use – Other assets 42,676 69,462 - - (261) (19,860) 92,017
Total 34,405,575 75,522 755,954 857 (2,906) (536,102) 34,698,900

(*) As of March 31, 2021, Concession agreements – equity value, and Program contracts included leases in the amounts of R$ 73,759 and R$ 190,006 (R$ 76,454 and R$ 193,107 as of December 31, 2020), respectively.

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December 31, 2019 Additions Contract renewal Transfer of contract asset Transfers Write-offs and disposals Amortization March 31, 2020
Intangible right arising from:
Concession agreements – equity value (*) 1,494,853 - (12,383) 28,026 73 (192) (15,160) 1,495,217
Concession agreements – economic value 712,852 - - 16,634 (3) (2) (21,846) 707,635
Program contracts (*) 13,819,700 1,572 12,383 131,891 1,310 (2,219) (179,615) 13,785,022
Program contracts – commitments 1,364,875 - - - - - (12,760) 1,352,115
Service contracts – São Paulo 14,390,763 700 - 123,026 (2,203) (2,940) (216,194) 14,293,152
Software license of use 471,706 - - 9,417 455 - (15,799) 465,779
Right of use – Other assets 70,698 22,997 - - - - (14,374) 79,321
Total 32,325,447 25,269 - 308,994 (368) (5,353) (475,748) 32,178,241

(*) As of March 31, 2020, Concession agreements – equity value, and Program contracts included leases in the amounts of R$ 84,563 and R$ 202,445 (R$ 87,266 and R$ 205,558 as of December 31, 2019), respectively.

As of June 30, 2020, a contract was signed for the provision of treatment services and final disposal of solid waste and collection of garbage tax in the Municipality of Diadema for 40 years. Garbage collection fees started to be charged on water and sewage consumption bills as of January 1, 2021 and were interrupted on May 1, 2021. In order to reach the best operationalization format, treatment services and final disposal of solid waste are in the study phase and, based on contractual provision, are subject to a partnership between SABESP and a private party, which will occur by means of a public call.

(c) Obligations arising from concession agreements

As of March 31, 2021, the Company has obligations recorded under “Program contract commitments”, in current liabilities and noncurrent liabilities, in the amounts of R$ 151,273 and R$ 40,575 (R$ 162,541 and R$ 68,939 as of December 31, 2020), respectively.

(d) Capitalization of interest and other finance charges

The Company capitalizes interest, inflation adjustment and exchange variation in concession intangible assets during the construction period. From January to March 2021, it capitalized R$ 54,018 (R$ 71,057 from January to March 2020).

(e) Construction margin

The Company is primarily responsible for the construction and installation of the concession infrastructure, either by using its own employees or contracting third parties, and is significantly exposed to its risks and benefits. Accordingly, the Company recognizes revenue from construction services corresponding to construction costs increased by gross margin.

Generally, constructions related to the concessions are performed by third parties. In such case, the margin is lower to cover administration costs and the assumption of responsibility for primary risks is lower. As of March 31, 2021 and 2020, the margin was 2.3%.

The construction margin was R$ 23.007 from January to March 2021 (R$ 12,655 from January to March 2020).

(f) Expropriations

As a result of the construction of priority projects related to water and sewage systems, the Company was required to expropriate third-parties' properties, whose owners will be compensated either amicably or through courts.

Expropriation costs are recorded as concession intangible assets after the transaction is concluded. From January to March 2021, expropriations totaled R$ 9,674 (R$ 7,316 from January to March 2020).

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(g) Public-Private Partnership - PPP

SABESP carries out operations related to the PPPs mentioned below. These operations and their respective obligations and guarantees are supported by agreements executed according to Law 11,079/2004.

The amounts recorded in intangible assets, net of amortization, are as follows:

March 31, 2021 December 31, 2020
Alto Tietê 282,918 287,645
São Lourenço 3,023,054 3,065,445
Total 3,305,972 3,353,090

The obligations assumed by the Company are as follows:

March 31, 2021 — Current liabilities Noncurrent liabilities Total liabilities December 31, 2020 — Current liabilities Noncurrent liabilities Total liabilities
Alto Tietê 58,324 142,121 200,445 59,429 149,726 209,155
São Lourenço 92,083 2,853,797 2,945,880 70,778 2,895,340 2,966,118
Total 150,407 2,995,918 3,146,325 130,207 3,045,066 3,175,273

(h) Amortization of Intangible Assets

The average amortization rate totaled 4.8% and 4.6% as of March 31, 2021 and 2020, respectively.

(i) Software license of use

The software license of use is capitalized based on the costs incurred to acquire software and ensure that they are ready for use. As of April 10, 2017, the Integrated Business Management System (Enterprise Resource Planning – SAP ERP) was implemented. This system includes the administrative/financial module.

The implementation of the commercial module Net@Suíte system began in August 2019 and is being carried out in different phases. As of March 31, 2021, it had already been implemented in 17 municipalities. The implementation is expected to be concluded in December 2021.

(j) Right of use

The Company recognizes right of use assets and lease liabilities, except for those of short term and low value. For these cases, SABESP maintained the amounts of R$ 2,804, R$ 2,968 and R$ 489 from January to March 2021 (R$ 1,326, R$ 2,290 and R$ 492 from January to March 2020) allocated under operating costs, selling expenses and administrative expenses, respectively.

Nature March 31, 2021 December 31, 2020
Leases - Contract asset 276,893 276,893
Leases - Concession and Program Contract
Cost 405,446 405,426
Accumulated amortization (141,681) (135,865)
(=) Net 263,765 269,561
Other assets (*)

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Vehicles 114,625 115,208
Properties 11,050 15,508
Equipment 4,403 4,541
Other assets 67,841 6,525
Accumulated amortization (105,902) (99,106)
(=) Net 92,017 42,676
Right of use 632,675 589,130

(*) Costs and accumulated amortization in the amount of R$ 13,064, referring to expired right of use, were written-off in the first quarter of 2021.

Lease liability corresponds to total future fixed lease payments, adjusted to present value, considering an incremental rate on borrowings. For further information, see Note 16.

The table below shows the impact on the Company’s result:

Impact on the result March 31, 2021 March 31, 2020
Right of use amortization (25,676) (20,189)
Financial result – interest expense and inflation adjustment (16,728) (15,693)
Expenses of short-term leases with low value (6,261) (4,108)
Reduction of profit for the period (48,665) (39,990)

(k) Performance Agreements

As of March 31, 2021, the accounting balances of these agreements recorded in contract asset and intangible assets were R$ 426,065 and R$ 472,868 (R$ 306,738 and R$ 265,940 as of December 31, 2020), respectively.

15 Property, plant and equipment

(a) Statement of financial position details

| | March 31, 2021 — Cost | Accumulated depreciation | Net | Annual average depreciation
rate | December 31, 2020 — Cost | Accumulated depreciation | Net | Annual average depreciation
rate |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Land | 94,213 | - | 94,213 | - | 94,213 | - | 94,213 | - |
| Buildings | 86,098 | (40,417) | 45,681 | 2.1% | 86,860 | (41,513) | 45,347 | 2.1% |
| Equipment | 376,204 | (274,976) | 101,228 | 14.4% | 372,103 | (271,087) | 101,016 | 14.8% |
| Transportation equipment | 10,319 | (7,518) | 2,801 | 9.9% | 10,319 | (7,350) | 2,969 | 9.9% |
| Furniture and fixtures | 31,584 | (14,030) | 17,554 | 6.7% | 31,232 | (13,813) | 17,419 | 6.7% |
| Other | 8,341 | (351) | 7,990 | 5.0% | 7,618 | (331) | 7,287 | 4.9% |
| Total | 606,759 | (337,292) | 269,467 | 10.7% | 602,345 | (334,094) | 268,251 | 11.2% |

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(b) Changes

December 31, 2020 Additions Transfers Write-offs and disposals Depreciation March 31, 2021
Land 94,213 - - - - 94,213
Buildings 45,347 564 25 - (255) 45,681
Equipment 101,016 7,346 (1,927) (28) (5,179) 101,228
Transportation equipment 2,969 - - - (168) 2,801
Furniture and fixtures 17,419 355 102 (4) (318) 17,554
Other 7,287 70 651 - (18) 7,990
Total 268,251 8,335 (1,149) (32) (5,938) 269,467
December 31, 2019 Additions Transfers Write-offs and disposals Depreciation March 31, 2020
Land 92,962 - - - - 92,962
Buildings 41,705 284 85 - (285) 41,789
Equipment 152,273 8,277 (56) (46) (7,070) 153,378
Transportation equipment 1,984 298 361 - (141) 2,502
Furniture and fixtures 18,219 405 (147) (8) (298) 18,171
Other 7,250 323 90 - (15) 7,648
Total 314,393 9,587 333 (54) (7,809) 316,450

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16 Borrowings and Financing

Borrowings and financing outstanding balance — Financial institution March 31, 2021 — Current Noncurrent Total December 31, 2020 — Current Noncurrent Total
Local currency
12th issue debentures 45,450 147,076 192,526 45,450 158,425 203,875
14th issue debentures 50,120 - 50,120 51,873 24,205 76,078
17th issue debentures 94,599 94,246 188,845 91,850 183,335 275,185
18th issue debentures 46,766 129,597 176,363 45,918 135,105 181,023
21st issue debentures 175,000 174,772 349,772 175,000 174,769 349,769
22nd issue debentures 200,000 485,143 685,143 99,969 678,149 778,118
23rd issue debentures - 864,697 864,697 - 864,678 864,678
24th issue debentures - 425,683 425,683 - 414,994 414,994
25th issue debentures 1,444,761 - 1,444,761 1,442,610 - 1,442,610
26th issue debentures - 1,075,607 1,075,607 - 1,047,767 1,047,767
27th issue debentures - 997,040 997,040 - 997,000 997,000
Brazilian Federal Savings Bank 92,569 1,333,112 1,425,681 90,382 1,324,459 1,414,841
Brazilian Development Bank - BNDES PAC 13,394 16,695 30,089 13,185 20,247 33,432
Brazilian Development Bank - BNDES PAC II 9751 7,161 35,661 42,822 7,159 37,447 44,606
Brazilian Development Bank - BNDES PAC II 9752 4,851 24,257 29,108 4,851 25,470 30,321
Brazilian Development Bank - BNDES ONDA LIMPA 26,751 80,129 106,880 26,751 86,809 113,560
Brazilian Development Bank – BNDES TIETÊ III 86,823 520,818 607,641 86,823 542,519 629,342
Brazilian Development Bank - BNDES 2015 33,558 445,766 479,324 33,558 454,126 487,684
Brazilian Development Bank - BNDES 2014 5,143 21,744 26,887 5,143 23,017 28,160
Inter-American Development Bank – IDB 2202 181,349 2,434,361 2,615,710 181,349 2,524,798 2,706,147
Inter-American Development Bank – IDB INVEST 89,630 853,411 943,041 44,815 898,060 942,875
Leases (Concession Agreements, Program Contracts and Contract Asset) 30,409 391,046 421,455 28,847 399,896 428,743
Leases (others) 59,178 43,765 102,943 36,576 9,300 45,876
Other 4,038 10,373 14,411 3,778 11,382 15,160
Interest and charges 170,507 - 170,507 158,918 - 158,918
Total in local currency 2,862,057 10,604,999 13,467,056 2,674,805 11,035,957 13,710,762

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Borrowings and financing outstanding balance — Financial institution March 31, 2021 — Current Noncurrent Total December 31, 2020 — Current Noncurrent Total
Foreign currency
Inter-American Development Bank - IDB 1212 – US$ 49,251 thousand (US$ 51,390 thousand in December 2020) 58,557 204,951 263,508 53,412 213,649 267,061
Inter-American Development Bank - IDB 4623 – US$ 13,459 thousand (US$ 10,220 thousand in December 2020) - 70,086 70,086 - 46,474 46,474
International Bank for Reconstruction and Development (IBRD) – IBRDs 7662 and 8906 - US$ 79,752 thousand (US$ 82,792 thousand in December 2020) 34,638 413,344 447,982 31,594 393,949 425,543
JICA 15 – ¥ 9,795,655 thousand (¥ 10,371,870 thousand in December 2020) 59,373 445,299 504,672 58,117 464,936 523,053
JICA 18 – ¥ 8,807,360 thousand (¥ 9,325,440 thousand in December 2020) 53,383 400,195 453,578 52,253 417,846 470,099
JICA 17 – ¥ 3,521,964 thousand (¥ 3,349,203 thousand in December 2020) 12,097 168,465 180,562 11,260 156,738 167,998
JICA 19 – ¥ 29,016,288 thousand (¥ 29,923,047 thousand in December 2020) 93,432 1,399,635 1,493,067 91,456 1,415,683 1,507,139
IDB 1983AB – US$ 23,077 thousand (US$ 23,077 thousand in December 2020) 43,825 86,749 130,574 39,975 78,943 118,918
Interest and charges 8,337 - 8,337 21,577 - 21,577
Total in foreign currency 363,642 3,188,724 3,552,366 359,644 3,188,218 3,547,862
Total borrowings and financing 3,225,699 13,793,723 17,019,422 3,034,449 14,224,175 17,258,624

Exchange rate as of March 31, 2021: US$ 5.6973; ¥ 0.05152 (as of December 31, 2020: US$ 5.1967; ¥ 0.05043).

As of March 31, 2021, the Company did not have balances of borrowings and financing raising during the year, maturing in up to 12 months.

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Local currency Guarantees Maturity Annual interest rate Inflation adjustment
12th issue debentures Own funds 2025 TR + 9.5%
14th issue debentures Own funds 2022 TJLP + 1.92 % (series 1 and 3) and 9.19% (series 2) IPCA (series 2)
17th issue debentures Own funds 2023 CDI + 0.75% (series 1), 4.5% (series 2) and 4.75% (series 3) IPCA (series 2 and 3)
18th issue debentures Own funds 2024 TJLP + 1.92% (series 1 and 3) and 8.25% (series 2) IPCA (series 2)
21st issue debentures Own funds 2022 CDI + 0.60% (series 1) and CDI+ 0.90% (series 2)
22nd issue debentures Own funds 2025 CDI + 0.58% (series 1) and CDI+ 0.90% (series 2) and 6.0% (series 3) IPCA (series 3)
23rd issue debentures Own funds 2027 CDI + 0.49% (series 1) and CDI+ 0.63% (series 2)
24th issue debentures Own funds 2029 3.20% (series 1) and 3.37% (series 2) IPCA (series 1 and 2)
25th issue debentures Own funds October 2021 CDI + 3.30%
26th issue debentures Own funds 2030 4.65 (series 1) and 4.95% (series 2) IPCA (series 1 and 2)
27th issue debentures Own funds 2027 CDI + 1.60% (series 1) and CDI+ 1.80% (series 2) and 2.25% (series 3)
Brazilian Federal Savings Bank Own funds 2021/2042 5% to 9.5% TR
Brazilian Development Bank - BNDES PAC Own funds 2023 TJLP + 1.82%
Brazilian Development Bank - BNDES PAC II 9751 Own funds 2027 TJLP + 1.72%
Brazilian Development Bank - BNDES PAC II 9752 Own funds 2027 TJLP + 1.72%
Brazilian Development Bank - BNDES ONDA LIMPA Own funds 2025 TJLP + 1.92%
Brazilian Development Bank – BNDES TIETÊ III Own funds 2028 TJLP + 1.66%
Brazilian Development Bank - BNDES 2015 Own funds 2035 TJLP + 2.18%
Brazilian Development Bank - BNDES 2014 Own funds 2026 TJLP + 1.76%
Inter-American Development Bank – IDB 2202 Government 2035 CDI + 0.86%
Inter-American Development Bank – IDB INVEST Own funds 2034 CDI+ 1.90% and CDI 2.70%
Leases (Concession Agreements, Program Contracts and Contract Asset) 2035 7.73% to 10.12% IPC
Leases (others) 2023 4.25% to 9.29%
Other Own funds 2025 3% (FEHIDRO) TJLP + 1.5% (FINEP)

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Foreign currency Guarantees Maturity Annual interest rate Exchange variation
Inter-American Development Bank - IDB 1212 – US$ 49,251 thousand Government 2025 3.31% (*) US$
Inter-American Development Bank - IDB 4623 – US$ 13,459 thousand Government 2044 1.12% (*) US$
International Bank for Reconstruction and Development (IBRD) – IBRDs 7662 and 8906 - US$ 79,752 thousand Government 2034 2.85% (*) US$
JICA 15 – ¥ 9,795,655 thousand Government 2029 1.8% and 2.5% Yen
JICA 18 – ¥ 8,807,360 thousand Government 2029 1.8% and 2.5% Yen
JICA 17 – ¥ 3,521,964 thousand Government 2035 1.2% and 0.01% Yen
JICA 19 – ¥ 29,016,288 thousand Government 2037 1.7% and 0.01% Yen
IDB 1983AB – US$ 23,077 thousand - 2023 2.08% to 2.38% (*) US$

(*) Rates comprising LIBOR + contractually defined spread.

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(i) Payment schedule – accounting balances as of March 31, 2021

2021 2022 2023 2024 2025 2026 2027 to 2048 TOTAL
LOCAL CURRENCY
Debentures 1,720,391 585,510 684,974 921,681 488,508 381,539 1,667,954 6,450,557
Brazilian Federal Savings Bank 68,857 96,105 89,983 88,991 94,561 100,482 886,702 1,425,681
BNDES 133,261 177,681 170,937 164,287 144,101 134,853 397,631 1,322,751
IDB 2202 90,674 181,349 181,349 181,349 181,349 181,349 1,618,291 2,615,710
IDB INVEST 44,815 89,630 89,630 89,630 89,630 89,630 450,076 943,041
Leases (Concession Agreements, Program Contracts and Contract Asset) 32,756 34,993 37,606 40,933 44,558 28,843 201,766 421,455
Leases (others) 47,331 40,380 15,232 - - - - 102,943
Other 3,028 4,038 3,977 1,757 1,611 - - 14,411
Interest and charges 170,507 - - - - - - 170,507
TOTAL IN LOCAL CURRENCY 2,311,620 1,209,686 1,273,688 1,488,628 1,044,318 916,696 5,222,420 13,467,056
FOREIGN CURRENCY
IDB 29,279 58,557 58,557 58,557 60,575 4,036 64,033 333,594
IBRD 17,319 34,638 34,638 34,638 34,638 34,638 257,473 447,982
JICA 115,191 218,285 218,285 218,285 218,285 218,285 1,425,263 2,631,879
IDB 1983AB 43,825 43,825 42,924 - - - - 130,574
Interest and charges 8,337 - - - - - - 8,337
TOTAL IN FOREIGN CURRENCY 213,951 355,305 354,404 311,480 313,498 256,959 1,746,769 3,552,366
Total 2,525,571 1,564,991 1,628,092 1,800,108 1,357,816 1,173,655 6,969,189 17,019,422

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| | December 31, 2020 | Addition (lease) | Funding | Borrowing costs | Monetary and exchange variation | Inflation adjustment /
exchange variation and incorporated interest- Capitalized | Interest paid | Amortization | Accrued interest | Provision for interest
and fees - Capitalized | Expenses with borrowing
costs | March 31, 2021 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| LOCAL CURRENCY | | | | | | | | | | | | |
| Debentures | 6,756,504 | - | - | (482) | 52,397 | - | (46,438) | (236,265) | 60,763 | 11,483 | 4,050 | 6,602,012 |
| Brazilian Federal Savings Bank | 1,418,832 | - | 32,913 | - | - | - | (27,718) | (22,075) | 18,197 | 9,573 | - | 1,429,722 |
| BNDES | 1,370,902 | - | - | - | - | - | (20,754) | (44,420) | 3,968 | 16,575 | 65 | 1,326,336 |
| IDB 2202 | 2,730,195 | - | - | - | - | - | (40,708) | (90,674) | 10,461 | 12,608 | 239 | 2,622,121 |
| IDB INVEST | 944,513 | - | - | - | - | - | (7,758) | - | 11,112 | - | 166 | 948,033 |
| Leases (Concession Agreements, Program Contracts and Contract Asset) | 428,743 | - | - | - | - | - | (20,484) | (7,289) | 20,484 | - | - | 421,454 |
| Leases (others) | 45,876 | 69,462 | - | - | - | - | (3,532) | (19,860) | 10,998 | - | - | 102,944 |
| Other | 15,197 | - | - | - | - | - | (181) | (751) | 163 | 6 | - | 14,434 |
| TOTAL IN LOCAL CURRENCY | 13,710,762 | 69,462 | 32,913 | (482) | 52,397 | - | (167,573) | (421,334) | 136,146 | 50,245 | 4,520 | 13,467,056 |
| FOREIGN CURRENCY | | | | | | | | | | | | |
| IDB | 317,302 | - | 17,841 | - | 29,288 | - | (4,149) | (27,111) | 2,080 | - | 41 | 335,292 |
| IBRD | 426,860 | - | - | (1,733) | 41,197 | - | (1,375) | (17,070) | 179 | - | 45 | 448,103 |
| JICA | 2,684,321 | - | 8,972 | - | 55,536 | 1,870 | (22,084) | (102,834) | 9,502 | 1,766 | 49 | 2,637,098 |
| IDB 1983AB | 119,379 | - | - | - | 11,552 | - | - | - | 701 | 137 | 104 | 131,873 |
| TOTAL IN FOREIGN CURRENCY | 3,547,862 | - | 26,813 | (1,733) | 137,573 | 1,870 | (27,608) | (147,015) | 12,462 | 1,903 | 239 | 3,552,366 |
| Total | 17,258,624 | 69,462 | 59,726 | (2,215) | 189,970 | 1,870 | (195,181) | (568,349) | 148,608 | 52,148 | 4,759 | 17,019,422 |

(ii) Changes

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| | December 31, 2019 | Addition (lease) | Funding | Borrowing costs | Monetary and exchange variation | Inflation adjustment / exchange
variation and incorporated interest- Capitalized | Interest paid | Amortization | Accrued interest | Provision for interest
and fees - Capitalized | Expenses with borrowing costs | March 31, 2020 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| LOCAL CURRENCY | | | | | | | | | | | | |
| Debentures | 3,711,228 | - | - | (250) | 18,607 | - | (70,111) | (337,775) | 41,162 | 3,931 | 667 | 3,367,459 |
| Brazilian Federal Savings Bank | 1,429,250 | - | 25,634 | - | - | - | (28,112) | (20,460) | 18,659 | 9,463 | - | 1,434,434 |
| BNDES | 1,201,411 | - | - | - | - | - | (20,587) | (34,096) | 13,441 | 6,892 | 65 | 1,167,126 |
| Leases (Concession Agreements, Program Contracts and Contract Asset) | 459,671 | - | - | - | (289) | - | (9,421) | (6,978) | 8,854 | - | - | 451,837 |
| Leases | 74,453 | 22,997 | - | - | - | - | (1,631) | (14,374) | 2,220 | - | - | 83,665 |
| Other | 9,898 | - | 3,593 | - | - | - | (145) | (346) | 143 | 4 | - | 13,147 |
| TOTAL IN LOCAL CURRENCY | 6,885,911 | 22,997 | 29,227 | (250) | 18,318 | - | (130,007) | (414,029) | 84,479 | 20,290 | 732 | 6,517,668 |
| FOREIGN CURRENCY | | | | | | | | | | | | |
| IDB | 2,316,190 | - | - | - | 627,229 | 24,907 | (39,415) | (93,424) | 7,685 | 14,595 | 239 | 2,858,006 |
| IBRD | 357,880 | - | - | (352) | 102,072 | 878 | (5,159) | (14,950) | 2,672 | 476 | 35 | 443,552 |
| Eurobonds | 1,413,956 | - | - | - | 408,800 | - | - | - | 31,622 | 2,994 | 205 | 1,857,577 |
| JICA | 2,106,908 | - | 1,167 | - | 610,820 | 5,220 | (18,502) | (57,826) | 9,637 | 1,445 | 47 | 2,658,916 |
| IDB 1983AB | 163,864 | - | - | - | 47,618 | - | - | - | 2,675 | 252 | 240 | 214,649 |
| TOTAL IN FOREIGN CURRENCY | 6,358,798 | - | 1,167 | (352) | 1,796,539 | 31,005 | (63,076) | (166,200) | 54,291 | 19,762 | 766 | 8,032,700 |
| Total | 13,244,709 | 22,997 | 30,394 | (602) | 1,814,857 | 31,005 | (193,083) | (580,229) | 138,770 | 40,052 | 1,498 | 14,550,368 |

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(a) Main events in the three-month period ended March 31, 2021

(i) Debentures

As of January 2021, the Company amortized the first installment of series 3 of the 17th issue debentures, totaling R$ 91.7 million.

In February 2021, it amortized series 1 of the 22nd issue debentures, in the amount of R$ 100.0 million.

(ii) IDB

In the first quarter of 2021, the Company raised R$ 17.8 million, referring to another installment of contract IDB 4623.

In March 2021, it amortized R$ 90.7 million, referring to contract IDB 2202.

(iii) JICA

In the first quarter of 2021, the Company amortized R$ 102.8 million, referring to contracts JICA 15, 18 and 19.

(b) Lease

The Company has lease agreements signed as Assets Lease. During the construction period, work costs are capitalized to contract asset and the lease amount is recorded at the same proportion.

After startup, the lease payment period starts (240 monthly installments), whose amount is periodically restated by contracted price index.

The amounts payable for the right of use of assets are also recorded in this line (Note 14 (j))

(c) Covenants

The table below shows the most restrictive covenants as of March 31, 2021.

Covenants
Adjusted EBITDA / Adjusted Financial Expenses Equal to or higher than 2.80
Adjusted Net Debt / Adjusted EBITDA Equal to or lower than 3.80
Adjusted Total Debt / Adjusted EBITDA Lower than 3.65
Other Onerous Debt (1) / Adjusted EBITDA Equal to or lower than 1.30
Adjusted Current Ratio Higher than 1.00
EBITDA / Financial Expenses Paid Equal to or higher than 2.35
Net Debt / Adjusted EBITDA Equal to or lower than 3.50
(1) The contractual definition of “Other Onerous Debts” correspond to the sum of pension obligations and healthcare plan, installment payment of tax debts and installment payment of debts with the electricity supplier.

As of March 31, 2021 and 2020, the Company met the requirements set forth by its borrowings and financing agreements.

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(d) Borrowings and financing - Credit limited

Agent March 31, 2021
(in millions of reais (*))
Brazilian Federal Savings Bank 1,482
Brazilian Development Bank (BNDES) 708
Japan International Cooperation Agency (JICA) 78
Inter-American Development Bank (IDB) 1,633
International Bank for Reconstruction and Development (IBRD) 1,421
Other 51
TOTAL 5,373

(*) Brazilian Central Bank’s exchange rate as of March 31, 2021 (US$ 1.00 = R$ 5.6973; ¥ 1.00 = R$ 0.05152).

Financing resources contracted have specific purposes, which have been released for the execution of their respective investments, according to the progress of the works.

17 Taxes and contributions

(a) Current assets

March 31, 2021 December 31, 2020
Recoverable taxes
Income tax and social contribution 35,545 -
Withheld income tax (IRRF) on financial investments 6,661 4,391
Other federal taxes 17,052 18,281
Total 59,258 22,672

(b) Current liabilities

March 31, 2021 December 31, 2020
Taxes and contributions payable
Income tax and social contribution 92,596 69,041
Cofins and Pasep 78,227 93,601
INSS (social security contribution) 36,479 37,599
IRRF (withholding income tax) 9,423 21,287
Other 38,292 45,291
Total 255,017 266,819

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18 Deferred taxes and contributions

(a) Statement of financial position details

March 31, 2021 December 31, 2020
Deferred tax assets
Provisions 444,543 436,445
Pension obligations - G1 153,550 154,498
Donations of underlying assets on concession agreements 49,471 50,142
Credit losses 174,010 155,719
Other 129,911 134,932
Total deferred tax asset 951,485 931,736
Deferred tax liabilities
Temporary difference on concession of intangible asset (384,033) (388,675)
Capitalization of borrowing costs (386,369) (390,211)
Profit on supply to government entities (357,164) (356,513)
Actuarial gain – G1 Plan (48,979) (48,979)
Construction margin (48,152) (48,843)
Borrowing costs (17,778) (19,231)
Total deferred tax liabilities (1,242,475) (1,252,452)
Deferred tax liability, net (290,990) (320,716)

(b) Changes

Deferred tax assets December 31, 2020 Net variation March 31, 2021
Provisions 436,445 8,098 444,543
Pension obligations - G1 154,498 (948) 153,550
Donations of underlying assets on concession agreements 50,142 (671) 49,471
Allowance for doubtful accounts 155,719 18,291 174,010
Other 134,932 (5,021) 129,911
Total 931,736 19,749 951,485
Deferred tax liabilities
Temporary difference on concession of intangible asset (388,675) 4,642 (384,033)
Capitalization of borrowing costs (390,211) 3,842 (386,369)
Profit on supply to government entities (356,513) (651) (357,164)
Actuarial gain – G1 (48,979) - (48,979)
Construction margin (48,843) 691 (48,152)
Borrowing costs (19,231) 1,453 (17,778)
Total (1,252,452) 9,977 (1,242,475)
Deferred tax liability, net (320,716) 29,726 (290,990)

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Deferred tax assets December 31, 2019 Net variation March 31, 2020
Provisions 366,673 (807) 365,866
Pension obligations - G1 157,998 (1,016) 156,982
Donations of underlying assets on concession agreements 51,818 (619) 51,199
Allowance for doubtful accounts 145,622 37,834 183,456
Other 183,147 4,933 188,080
Total 905,258 40,325 945,583
Deferred tax liabilities
Temporary difference on concession of intangible asset (408,732) 5,125 (403,607)
Capitalization of borrowing costs (409,236) 4,914 (404,322)
Profit on supply to government entities (372,289) 3,316 (368,973)
Actuarial gain – G1 (54,222) - (54,222)
Construction margin (83,399) 32,483 (50,916)
Borrowing costs (11,376) 424 (10,952)
Total (1,339,254) 46,262 (1,292,992)
Deferred tax liability, net (433,996) 86,587 (347,409)

(c) Reconciliation of the effective tax rate

The amounts recorded as income tax and social contribution expenses in the financial statements are reconciled to the statutory rates, as shown below:

January to March 2021 January to March 2020
Profit/(loss) before income taxes 750,615 (977,257)
Statutory rate 34% 34%
Estimated expense at statutory rate (255,209) 332,267
Permanent differences
Provision
Law 4,819/1958 – G0 (i) (6,277) (10,095)
Donations (1,367) (3,774)
Other
differences 9,096 913
Income
tax and social contribution (253,757) 319,311
Current
income tax and social contribution (28 3,483) 232,724
Deferred
income tax and social contribution 29,726 86,587
Effective
rate 34% 33%

(i) Permanent difference related to the provision for actuarial liability (Note 21 (b) (ii)).

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19 Provisions

(a) Lawsuits and proceedings that resulted in provisions

(I) Statement of financial position details

The Company is a party to a number of legal claims and administrative proceedings arising from the normal course of business, including civil, tax, labor and environmental matters. Management recognizes provisions consistently with the recognition and measurement criteria established in Note 3.14 of the Annual Financial Statements of December 31, 2020. The terms and payment amounts are defined based on the outcome of these lawsuits.

March 31, 2021 — Provisions Escrow deposits Provisions net of deposits December 31, 2020 — Provisions Escrow deposits Provisions net of deposits
Customer claims (i) 164,609 (10,026) 154,583 160,705 (10,553) 150,152
Supplier claims (ii) 400,284 (367) 399,917 410,734 (358) 410,376
Other civil claims (iii) 87,083 (2,300) 84,783 86,083 (2,505) 83,578
Tax claims (iv) 64,687 (2,487) 62,200 59,678 (2,410) 57,268
Labor claims (v) 328,275 (14,603) 313,672 316,880 (15,503) 301,377
Environmental claims (vi) 260,398 (31) 260,367 249,582 (31) 249,551
Total 1,305,336 (29,814) 1,275,522 1,283,662 (31,360) 1,252,302
Current 753,865 - 753,865 760,209 - 760,209
Noncurrent 551,471 (29,814) 521,657 523,453 (31,360) 492,093

(II) Changes

December 31, 2020 Additional provisions Interest and inflation adjustment Use of the accrual Amounts not used (reversal) March 31, 2021
Customer claims (i) 160,705 6,013 7,563 (1,901) (7,771) 164,609
Supplier claims (ii) 410,734 1,603 11,702 (23,613) (142) 400,284
Other civil claims (iii) 86,083 900 2,995 (1,676) (1,219) 87,083
Tax claims (iv) 59,678 4,426 1,622 - (1,039) 64,687
Labor claims (v) 316,880 15,362 8,071 (6,634) (5,404) 328,275
Environmental claims (vi) 249,582 8,849 10,990 - (9,023) 260,398
Subtotal 1,283,662 37,153 42,943 (33,824) (24,598) 1,305,336
Escrow deposits (31,360) (549) (728) 2,309 514 (29,814)
Total 1,252,302 36,604 42,215 (31,515) (24,084) 1,275,522
December 31, 2019 Additional provisions Interest and inflation adjustment Use of the accrual Amounts not used (reversal) March 31, 2020
Customer claims (i) 253,665 5,613 7,256 (38,355) (10,720) 217,459
Supplier claims (ii) 153,654 35,941 5,426 (5) (36) 194,980
Other civil claims (iii) 93,910 4,683 3,770 (15,312) (3,231) 83,820
Tax claims (iv) 59,143 149 908 (8) (435) 59,757

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Labor claims (v) 325,129 13,600 9,655 (22,385) (13,064) 312,935
Environmental claims (vi) 192,950 8,986 6,726 - (1,537) 207,125
Subtotal 1,078,451 68,972 33,741 (76,065) (29,023) 1,076,076
Escrow deposits (42,643) (822) (360) 14,431 5,376 (24,018)
Total 1,035,808 68,150 33,381 (61,634) (23,647) 1,052,058

(b) Lawsuits deemed as contingent liabilities

The Company is party to lawsuits and administrative proceedings relating to environmental, tax, civil and labor claims, which are assessed as contingent liabilities in the financial statements, since it either does not expect outflows to be required or the amount of the obligations cannot be reliably measured. Contingent liabilities, net of deposits, are represented as follows:

March 31, 2021 December 31, 2020
Customer claims (i) 121,994 110,508
Supplier claims (ii) 1,400,407 1,350,308
Other civil claims (iii) 752,782 758,800
Tax claims (iv) 1,311,843 1,253,636
Labor claims (v) 1,028,946 1,005,648
Environmental claims (vi) 6,251,775 5,981,837
Total 10,867,747 10,460,737

(c) Explanation on the nature of main classes of lawsuits

(i) Customer claims

Approximately 730 lawsuits (690 as of December 31, 2020) were filed by commercial customers, who claim that their tariffs should correspond to other customer categories, and 310 lawsuits (310 as of December 31, 2020) in which customers claimed a reduction in the sewage tariff due to losses in the system, consequently requesting the refund of amounts charged by the Company, and 30 lawsuits (30 as of December 31, 2020) in which customers plead the reduction in tariff under the category “Social Welfare Entity”.

(ii) Supplier claims

These lawsuits include lawsuits filed by some suppliers alleging underpayment of monetary adjustments and the economic and financial imbalance of the agreements, and are in progress at different courts.

(iii) Other civil claims

These mainly refer to indemnities for property damage, pain and suffering, and loss of profits allegedly caused to third parties, such as vehicle accidents, claims, challenges on the methodology to collect tariffs, among others, filed at different court levels.

(iv) Tax claims

Tax claims refer mainly to tax collections and fines in general challenged due to disagreements regarding notification or differences in the interpretation of legislation by the Company's Management, which were accrued while others were deemed as contingent liabilities.

(v) Labor claims

The Company is a party to several labor lawsuits, involving issues such as overtime, shift schedule, health hazard premium and hazardous duty premium, prior notice, change of function, salary equalization, service outsourcing and other, which are at various court levels.

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(vi) Environmental claims

These refer to several administrative proceedings and lawsuits filed by government entities, including Companhia Ambiental do Estado de São Paulo (CETESB) and the Public Prosecution Office of the São Paulo State, that aim affirmative and negative covenants and penalty is estimated due to failure to comply in addition to the imposition of indemnity due to environmental damages allegedly caused by the Company.

(d) Guarantee insurance

On May 25, 2020, the Company renewed the insurance for policy issuance, thus contracting guarantee insurance for escrow deposit, in the amount of R$ 500.000, for one year. Such insurance will be used to settle legal claims instead of

having immediate cash disbursement by the Company, such insurance is used until the conclusion of these proceedings limited to up to five years. From January to March 2021, the Company used R$ 4,437 (R$ 721 from January to March 2020). Until March 2021, the Company used R$ 123,779 of the contract in effect, thus remaining R$ 376,221.

20 Labor liabilities and pension plan obligations

March 31, 2021 December 31, 2020
Salaries and payroll charges 30,089 53,107
Provision for vacation 208,052 207,906
Provision for Christmas bonus 17,528 -
Healthcare plan (i) 44,478 45,768
Provision for profit sharing (ii) 29,930 91,209
Consent Decree (TAC) 5,995 8,978
Knowledge Retention Program (PRC) 2,283 3,975
Total 338,355 410,943

(i) Healthcare plan

Since August 1, 2019, the health plans managed by Fundação CESP (VIVEST), which replaced the previous health plans managed by SABESPREV, have been in effect.

Benefits are now paid after the event, free of choice, sponsored by contributions of SABESP and the employees. In the first quarter of 2021, the Company contributed 8.7%, on average, of gross payroll, totaling R$ 54,970 (8.4% in the first quarter of 2020, totaling R$ 54,021).

(ii) Profit sharing

The profit sharing program was implemented in accordance with an agreement with the labor union. Payment corresponds to up to one-month salary for each employee, depending on performance of goals reached from January to December, and should be paid in the subsequent year.

21 Pension plan obligations

The Company has Post-Employment Benefit Plans in the following modalities: Defined Benefit (BD) – G1 (i) and G0 (ii); and Defined Contribution (CD) – Sabesprev Mais (iii) and VIVEST (iv). See the reconciliation of expenses with such plans in item (v).

Defined benefit plans

Summary of pension plan

G1 Plan G0 Plan Total
Pension plan obligations as of December 31, 2020 (319,053) (2,549,541) (2,868,594)
Expenses recognized in 2021 (5,811) (39,554) (45,365)
Payments made in 2021 8,732 40,032 48,764
Pension plan obligations as of March 31, 2021 (316,132) (2,549,063) (2,865,195)

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G1 Plan G0 Plan Total
Pension plan obligations as of December 31, 2019 (314,677) (3,046,255) (3,360,932)
Expenses recognized in 2020 (6,241) (51,565) (57,806)
Payments made in 2020 9,375 42,677 52,052
Pension plan obligations as of March 31, 2020 (311,543) (3,055,143) (3,366,686)

(i) G1 Plan

Managed by SABESPREV, the defined benefit plan (“G1 Plan”) receives similar contributions established in a plan of subsidy of actuarial study of SABESPREV, as follows:

● 0.99% of the portion of the salary of participation up to 20 salaries; and

● 8.39% of the surplus, if any, of the portion of the salary of participation over 20 salaries.

(ii) G0 Plan

Pursuant to State Law 4,819/1958, employees who started providing services prior to May 1974 and retired as an employee of the Company acquired a legal right to receive supplemental pension payments, which rights are referred as "G0 Plan". The Company pays supplemental retirement and pension amounts on behalf of the São Paulo State and seeks reimbursements of such amounts, which are recorded as accounts receivable from shareholders, limited to the amounts considered virtually certain to be reimbursed by the São Paulo State.

(iii) Sabesprev Mais Plan

Since January 1, 2020, the “Sabesprev Mais” Defined Contribution Plan, managed by SABESPREV, has not been accepting any new adhesions. New employees have the option to join Fundação CESP (VIVEST) Defined Contribution Plan, as well as those who did not join the Sabesprev Mais Plan.

The sponsor's contributions correspond to the result obtained by applying a percentage of 100% on the basic contribution made by the participant.

(iv) VIVEST Plan

Defined Contribution Plan administered by VIVEST. The sponsor's contributions correspond to the result obtained by applying a percentage of 100% on the basic contribution made by the participant.

(v) Reconciliation of expenditures with pension plan obligations

March 31, 2021 March 31, 2020
G1 Plan (i) 5,811 6,241
G0 Plan (ii) 39,554 51,565
Sabesprev Mais Plan (iii) 5,286 5,968
VIVEST Plan (iv) 26 1
Subtotal 50,677 63,775
Capitalized (994) (1,340)
Reimbursement of additional retirement and pension benefits paid (G0): (21,093) (21,876)
Other 1,215 1,662
Pension plan obligations (Note 27) 29,805 42,221

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22 Services payable

This line records the balances payable, mainly from services received from third parties, such as supply of electric power, reading of hydrometers and delivery of water and sewage bills, cleaning, surveillance and security services, collection, legal counsel services, audit, marketing and advertising and consulting services, among others. This line also includes the amounts payable related to the transfer of 7.5% of revenue from the São Paulo municipal government to the Municipal Fund for Environmental Sanitation and Infrastructure. The balances as of March 31, 2021 and December 31, 2020 were R$ 617,713 and R$ 453,750, respectively.

23 Equity

(a) Share capital

As of March 31, 2021 and December 31, 2020, the authorized, subscribed and paid-in capital, in the amount of R$ 15,000.000, was composed of 683,509,869 registered, book-entry common shares with no par value, as follows:

March 31, 2021 — Number of shares % December 31, 2020 — Number of shares %
São Paulo State 343,507,729 50.3 343,507,729 50.3
Other shareholders
In Brazil (1) 239,963,446 35.1 254,868,646 37.3
Abroad (2) (3) 100,038,694 14.6 85,133,494 12.4
Total 683,509,869 100.0 683,509,869 100.0

(1) As of March 31, 2021, the common shares traded in Brazil were held by 44,353 shareholders, in addition to the controlling shareholder. It includes six shares held by Cia Paulista de Parcerias – CPP, a company controlled by the São Paulo State.

(2) Shares traded as American Depositary Receipts (ADR) on the New York Stock Exchange, by means of The Bank New York Mellon, the depositary bank of the Company’s ADRs.

(3) Each ADR corresponds to 1 share.

(b) Interest on capital

The Annual Shareholders’ Meeting of April 29, 2021 approved the distribution of dividends as interest on capital, in the amount of R$ 231,163, corresponding to minimum mandatory dividend of R$ 40,806 as additional dividends, totaling R$ 271,969, to be paid on June 28, 2021.

24 Earnings per share Basic and diluted

Basic earnings/(loss) per share is calculated by dividing the equity attributable to owners by the weighted average number of outstanding common shares during the year. The Company does not have potentially dilutive common shares outstanding or debts convertible into common shares. Accordingly, basic and diluted earnings per share are equal.

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January to March 2021 January to March 2020
Profit (loss) attributable to the Company’s owners 496,858 (657,946)
Weighted average number of common shares issued 683,509,869 683,509,869
Basic and diluted earnings (loss) per share (reais per share) 0.72692 (0.96260)

25 Operating segment information

The Company’s Management, composed of the Board of Directors and the Executive Board, has determined the operating segment used to make strategic decisions, such as sanitation services.

Result

| | January to March 2021 — Sanitation (i) | Reconciliation to the income
statement (ii) | Balance as per financial
statements |
| --- | --- | --- | --- |
| Gross operating revenue | 3,937,222 | 1,023,305 | 4,960,527 |
| Gross sales deductions | (283,110) | - | (283,110) |
| Net operating revenue | 3,654,112 | 1,023,305 | 4,677,417 |
| Costs, selling, general and administrative expenses | (2,590,864) | (1,000,298) | (3,591,162) |
| Income from operations before other operating expenses, net and equity accounting | 1,063,248 | 23,007 | 1,086,255 |
| Other operating income / (expenses), net | | | 10,676 |
| Equity accounting | | | 8,054 |
| Financial result, net | | | (354,370) |
| Income before income tax and social contribution | | | 750,615 |
| Depreciation and amortization | (542,052) | - | (542,052) |

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| | January to March 2020 — Sanitation (i) | Reconciliation to the income
statement (ii) | Balance as per financial
statements |
| --- | --- | --- | --- |
| Gross operating revenue | 3,803,878 | 521,420 | 4,325,298 |
| Gross sales deductions | (282,948) | - | (282,948) |
| Net operating revenue | 3,520,930 | 521,420 | 4,042,350 |
| Costs, selling, general and administrative expenses | (2,536,885) | (508,765) | (3,045,650) |
| Income from operations before other operating expenses, net and equity accounting | 984,045 | 12,655 | 996,700 |
| Other operating income / (expenses), net | | | 2,753 |
| Equity accounting | | | 3,575 |
| Financial result, net | | | (1,980,285) |
| Income before income tax and social contribution | | | (977,257) |
| Depreciation and amortization | (483,569) | - | (483,569) |

(i) See Note 31 for information on non-cash items and Notes 13 and 14 for information on long-lived assets.

(ii) Construction revenue and related costs are not reported to the CODM. Revenue from construction is recognized in accordance with ICPC 01 (R1) / IFRIC 12 (Concession Agreements) and CPC 47/IFRS 15 (Revenue from Contracts with Customers), as all performance obligations are satisfied over time. See Note 14 (e) for further information.

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26 Operating revenue

(a) Revenue from sanitation services:

January to March 2021 January to March 2020
Metropolitan Region of São Paulo 2,781,778 2,670,166
Regional Systems 1,155,444 1,133,712
Total 3,937,222 3,803,878

(b) Reconciliation between gross operating income and net operating revenue:

January to March 2021 January to March 2020
Revenue from sanitation services (i) 3,937,222 3,803,878
Construction revenue 1,023,305 521,420
Sales tax (264,885) (266,051)
Regulation, Control and Oversight Fee (TRCF) (18,225) (16,897)
Net revenue 4,677,417 4,042,350

(i) Includes R$ 19,288 referring to the TRCF charged in the municipalities regulated by ARSESP from January to March 2021 (R$ 18,738 from January to March 2020).

27 Operating costs and expenses

January to March 2021 January to March 2020
Operating costs
Salaries, payroll charges and benefits (473,094) (503,677)
Pension plan obligations (8,851) (9,702)
Construction costs (Note 25) (1,000,298) (508,765)
General supplies (60,930) (56,649)
Treatment supplies (98,925) (93,764)
Outsourced services (367,595) (308,964)
Electricity (357,975) (325,838)
General expenses (180,476) (165,796)
Depreciation and amortization (499,899) (448,857)
(3,048,043) (2,422,012)
Selling expenses
Salaries, payroll charges and benefits (61,262) (67,994)
Pension plan obligations (1,177) (1,314)
General supplies (1,529) (1,415)

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Outsourced services (86,935) (62,060)
Electricity (347) (363)
General expenses (27,046) (34,386)
Depreciation and amortization (16,497) (14,438)
(194,793) (181,970)
Allowance for doubtful accounts (Note 9 (c)) (121,051) (157,489)
Administrative expenses
Salaries, payroll charges and benefits (57,372) (63,919)
Pension plan obligations (19,777) (31,205)
General supplies (5,809) (7,624)
Outsourced services (49,382) (53,097)
Electricity (590) (333)
General expenses (51,336) (92,231)
Depreciation and amortization (25,656) (20,274)
Tax expenses (17,353) (15,496)
(227,275) (284,179)
Operating costs and expenses
Salaries, payroll charges and benefits (591,728) (635,590)
Pension plan obligations (Note 21 (v)) (29,805) (42,221)
Construction costs (Note 25) (1,000,298) (508,765)
General supplies (68,268) (65,688)
Treatment supplies (98,925) (93,764)
Outsourced services (503,912) (424,121)
Electricity (358,912) (326,534)
General expenses (258,858) (292,413)
Depreciation and amortization (542,052) (483,569)
Tax expenses (17,353) (15,496)
Allowance for doubtful accounts (Note 9 (c)) (121,051) (157,489)
(3,591,162) (3,045,650)

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28 Financial income (expenses)

January to March 2021 January to March 2020
Financial expenses
Interest and charges on borrowings and financing – local currency (104,680) (73,581)
Interest and charges on borrowings and financing – foreign currency (12,462) (49,098)
Other financial expenses (74,643) (78,951)
Income tax over international remittance - (5,193)
Inflation adjustment on borrowings and financing (52,397) (18,607)
Other inflation adjustments (42,113) (32,214)
Interest and inflation adjustments on provisions (41,954) (26,261)
Total financial expenses (328,249) (283,905)
Financial revenue
Inflation adjustment gains 51,183 36,148
Income on financial investments 18,221 22,102
Interest income 46,980 45,556
Cofins and Pasep (5,414) (4,877)
Other 41 3
Total financial income 111,011 98,932
Financial income (expenses), net of exchange variation (217,238) (184,973)
Exchange variation
Exchange variation on borrowings and financing (137,573) (1,796,539)
Exchange variation gains 447 1,224
Other exchange variations (6) 3
Exchange variations, net (137,132) (1,795,312)
Financial income (expenses), net (354,370) (1,980,285)

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29 Other operating income (expenses), net

January to March 2021 January to March 2020
Other operating income, net 7,796 10,039
Other operating expenses 2,880 (7,286)
Other operating income (expenses), net 10,676 2,753

Other operating income is comprised of sale of property, plant and equipment, sale of contracts awarded in public bids, right to sell electricity, indemnities and reimbursement of expenses, fines and collaterals, property leases, reuse water, PURA projects and services, net of Cofins and Pasep.

Other operating expenses consist mainly of derecognition of concessions assets due to obsolescence, discontinued construction works, unproductive wells, projects considered economically unfeasible, losses on property, plant and equipment, estimated losses and operational assets indemnification.

30 Commitments

The Company has agreements to manage and maintain its activities, as well as agreements to build new projects aiming at achieving the objectives proposed in its target plan. The main unrecognized committed amounts as of March 31, 2021 are as follows:

1 year 1-3 years 3-5 years More than 5 years Total
Contractual obligations – Expenses 1,201,264 499,365 132,618 686,320 2,519,567
Contractual obligations - Investments 1,965,996 1,371,072 1,459,631 628,997 5,425,696
Total 3,167,260 1,870,437 1,592,249 1,315,317 7,945,263

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31 Supplemental cash flow information

January to March 2021 January to March 2020
Total additions to contract assets (Note 13) 1,084,501 681,120
Total additions to intangible assets (Note 14 (b)) 75,522 25,269
Items not affecting cash (see breakdown below ) (509,103) (312,816)
Total additions to intangible and contract assets as per statement of cash flows 650,920 393,573
Investments and financing operations affecting intangible assets but not cash:
Interest capitalized in the period (Note 14 (d)) 54,018 71,057
Contractors payable 129,257 111,749
Performance agreements 233,359 94,358
Right of use 69,462 22,997
Construction margin (Notes 14 and 25) 23,007 12,655
Total 509,103 312,816

32 Events after the reporting period

Results of ARSESP’s Public Consultations

As of April 8, 2021, ARSESP published the results of the Calculation of the Maximum Average Tariff (P0) and X Factor of the Third Ordinary Tariff Revision and the results of the Proposal for Revision of SABESP’s Tariff Structure.

Although a new tariff structure has been approved, the tariff for 2021 is still based on the current tariff structure, while the new structure will be applied as of 2022. The impact of the tariff adjustment of users in the residential and non-residential, social residential and wholesale categories (water and sewage) was 7.6% in 2021, negative by 1.0% and 5.45%, respectively. Moreover, the actual tariff adjustments of the residential category for 2022, 2023 and 2024 have been established at 1.5%, 3% and 4.6%, respectively, together with the expansion of beneficiaries in the vulnerable residential category and the funds allocated to the 2019-2020 commercial programs.

The new tariff structure was defined by ARSESP considering four groups: (i) minimum consumption versus fixed tariff with a portion calculated based on the volume of water used; (ii) tariffs separated by type of service (such as water supply, and sewage collection and treatment); (iii) social tariff; and (iv) non-residential tariffs.

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Comments on the Company’s Projections

Comments on the Company’s Projections

The projections presented in the Reference Form are annual and not on a quarterly basis. Therefore, the quarterly comparison between information disclosed in the Reference Form with quarterly results shall not apply.

The projections monitoring occurs on annual basis and are disclosed in the Reference Form.

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Other Information Deemed as Relevant by the Company

  1. CHANGES IN INTEREST HELD BY THE CONTROLLING SHAREHOLDER, BOARD MEMBERS AND EXECUTIVE OFFICERS

| CONSOLIDATED SHAREHOLDING POSITION OF CONTROLLING
SHAREHOLDERS, MANAGEMENT AND OUTSTANDING SHARES Position as of March 31, 2021 — Shareholder | Number of Common Shares (units) | % | Total Number of Shares (units) | % |
| --- | --- | --- | --- | --- |
| Controlling Shareholder | | | | |
| Treasury Department (1) | 343,507,729 | 50.3% | 343,507,729 | 50.3% |
| Companhia Paulista de Parcerias - CPP | 6 | 0% | 6 | 0% |
| Management | | | | |
| Board of Directors | 200 | 0.0% | 200 | 0.0% |
| Executive Board | - | - | - | - |
| Fiscal Council | 0 | 0% | 0 | 0% |
| Treasury Shares | - | - | - | - |
| Other Shareholders | | | | |
| Total | 343,507,935 | 50.3% | 343,507,935 | 50.3% |
| Outstanding Shares | 340,001,934 | 49.7% | 340,001,934 | 49.7% |

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Other Information Deemed as Relevant by the Company

| CONSOLIDATED SHAREHOLDING POSITION OF CONTROLLING
SHAREHOLDERS, MANAGEMENT AND OUTSTANDING SHARES Position as of March 31, 2020 — Shareholder | Number of Common Shares (units) | % | Total Number of Shares (units) | % |
| --- | --- | --- | --- | --- |
| Controlling Shareholder | | | | |
| Treasury Department (1) | 343,507,750 | 50.3% | 343,507,750 | 50.3% |
| Companhia Paulista de Parcerias - CPP | 6 | 0% | 6 | 0% |
| Management | | | | |
| Board of Directors | 3,000 | 0.0% | 3,000 | 0.0% |
| Executive Board | - | - | - | - |
| Fiscal Council | 2 | 0% | 2 | 0% |
| Treasury Shares | - | - | - | - |
| Other Shareholders | | | | |
| Total | 343,510,758 | 50.3% | 343,510,758 | 50.3% |
| Outstanding Shares | 339,999,111 | 49.7% | 339,999,111 | 49.7% |

  1. SHAREHOLDING POSITION
SHAREHOLDING POSITION OF HOLDERS OF MORE THAN 5% OF EACH TYPE AND CLASS OF COMPANY SHARES, UP TO THE INDIVIDUAL LEVEL — Company: CIA SANEAMENTO BÁSICO ESTADO SÃO PAULO Position as of March 31, 2021 (number of shares)
Common shares Total
Shareholder Number of shares % Number of shares %
Treasury Department 343,507,729 50.3 343,507,729 50.3

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Reports and Statements / Unqualified Reports on Special Review

Report on Review of Interim Financial Information

To the Shareholders, Directors and Management of

Companhia de Saneamento Básico do Estado de São Paulo – SABESP

São Paulo – SP

Introduction

We have reviewed the accompanying interim financial information of Companhia de Saneamento Básico do Estado de São Paulo (“Company”), included in the Interim Financial Information Form (ITR) for the quarter ended March 31, 2021, which comprises the Statement of financial position as of March 31, 2021 and the related income statement and statement of comprehensive income, the statements of changes in equity and cash flows for the three months then ended, including a summary of significant accounting policies and other explanatory notes.

Management is responsible for the preparation of the interim financial information in accordance with Technical Pronouncement NBC TG - 21- Interim Financial Reporting and IAS 34 - Interim Financial Reporting, issued by the International Accounting Standards Board (IASB), as well as for the presentation of such information in accordance with the standards issued by the Brazilian Securities and Exchange Commission (CVM) applicable to the preparation of Interim Financial Information (ITR). Our responsibility is to express a conclusion on this interim financial information based on our review.

Scope of Review

We conducted our review in accordance with Brazilian and international standards on review of interim financial information (NBC TR 2410 and ISRE 2410 - Review of Interim Financial Information Performed by the Independent Auditor of the Entity). A review of interim financial information consists of making inquiries, primarily of persons responsible for financial and accounting matters, and applying analytical and other review procedures. A review is substantially less in scope than an audit conducted in accordance with the standards on auditing and consequently does not enable us to obtain assurance that we would become aware of all significant matters that might be identified in an audit. Accordingly, we do not express an audit opinion.

Conclusion on the interim financial information

Based on our review, nothing has come to our attention that causes us to believe that the accompanying interim financial information included in the Interim Financial Information Form (ITR) referred to above is not prepared, in all material respects, in accordance with NBC TG – 21 and IAS 34 applicable to the preparation of interim financial information and presented in accordance with the standards issued by the Brazilian Securities and Exchange Commission (CVM).

Other matters

Review of corresponding values related to comparative period

The review of the interim financial information for the quarter ended March 31, 2020 was performed by another independent auditor, who issued the review report without mofidication over the aforementioned interim financial information on May 14, 2020.

Statement of value added

The quarterly information referred to above includes stetements of value added for the period of three months ended March 31, 2021, prepared under the responsibility of the Company's management and presented as supplementary information for the purposes of IAS 34. These statements were submitted to the same review procedures in conjunction with the review of the Company's interim financial information in the order to conclude they are reconciliated to the interim financial information and to the accounting records, as applicable, and whether the structure and content are in accordance with the criteria established in the NBC TG 09 - Statement of Value Added. Based on our review, nothing has come to our attention that causes us to believe that the accompanying statements of value added were not prepared, in all material respects, in accordance with the interim financial information taken as a whole.

São Paulo, May 13, 2021

Nelson Fernandes Barreto Filho

CT CRC 1SP-151.079/O-0

Grant Thornton Auditores Independentes

CRC 2SP-025.583/O-1

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Reports and Statements / Executive Officers’ Statement on the Financial Statements

Executive Officers’ Statement on the Quarterly Information STATEMENT

The Executive Officers of Companhia de Saneamento Básico do Estado de São Paulo - SABESP, with Corporate Taxpayers’ ID (CNPJ/MF) number 43.776.517/0001-80, headquartered at Rua Costa Carvalho, nº 300, Pinheiros, São Paulo, declare that, pursuant to paragraph 1 of article 25, item VI of CVM Instruction 480, of December 7, 2009:

They reviewed, discussed and agreed with the quarterly information for the period ended March 31, 2021. São Paulo, May 13, 2021.

Companhia de Saneamento Básico do Estado de São Paulo – SABESP

Benedito Pinto Ferreira Braga Junior

Chief Executive Officer

Rui de Britto Álvares Affonso

Chief Finance and Investor Relations Officer

Adriano Candido Stringhini

Corporate Management Officer

Alceu Segamarchi Junior

Technology, Project and Environment Officer

Ricardo Daruiz Borsari

Metropolitan Officer

Monica Ferreira do Amaral Porto

Regional Systems Officer

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Reports and Statements / Executive Officers’ Statement on the Report of Independent Registered Public Accounting Firm

Executive Officers’ Statement on the Report of Independent Registered Public Accounting Firm STATEMENT

The Executive Officers of Companhia de Saneamento Básico do Estado de São Paulo - SABESP, with Corporate Taxpayers’ ID (CNPJ/MF) number 43.776.517/0001-80, headquartered at Rua Costa Carvalho, nº 300, Pinheiros, São Paulo, declare that, pursuant to paragraph 1 of article 25, item V of CVM Instruction 480, of December 7, 2009:

They reviewed, discussed and agreed with the Report of Independent Registered Public Accounting Firm on the quarterly information for the period ended March 31, 2021.

São Paulo, May 13, 2021.

Companhia de Saneamento Básico do Estado de São Paulo – SABESP

Benedito Pinto Ferreira Braga Junior

Chief Executive Officer

Rui de Britto Álvares Affonso

Chief Finance and Investor Relations Officer

Adriano Candido Stringhini

Corporate Management Officer

Alceu Segamarchi Junior

Technology, Project and Environment Officer

Ricardo Daruiz Borsari

Metropolitan Officer

Monica Ferreira do Amaral Porto

Regional Systems Officer

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the city São Paulo, Brazil.

Date: May 28, 2021

Companhia de Saneamento Básico do Estado de São Paulo - SABESP
By: /s/ Rui de Britto Álvares Affonso
Name: Rui de Britto Álvares Affonso Title: Chief Financial Officer and Investor Relations Officer

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.

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