CALIFORNIA WATER SERVICE GROUP — Investor Relations & Filings
California Water Service Group is a public utility holding company that provides regulated water and wastewater services. The company operates through several subsidiaries, including California Water Service, Hawaii Water Service, New Mexico Water Service, Washington Water Service, and Texas Water Service. Its core activities encompass the production, treatment, storage, and distribution of water for residential, commercial, industrial, and public use. Additionally, the group offers wastewater collection and treatment services in certain service areas. The company serves approximately two million people across its operating states, focusing on delivering safe, clean, and reliable water and wastewater solutions.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| FORM 8-K | 2026-05-21 | English | |
| FORM 8-K | 2026-05-20 | English | |
| 8-K - CALIFORNIA WATER SERVICE GROUP (0001035201) (Filer) | 2026-05-01 | English | |
| 10-Q - CALIFORNIA WATER SERVICE GROUP (0001035201) (Filer) | 2026-04-30 | English | |
| 8-K - CALIFORNIA WATER SERVICE GROUP (0001035201) (Filer) | 2026-04-30 | English | |
| ARS - CALIFORNIA WATER SERVICE GROUP (0001035201) (Filer) | 2026-04-08 | English |
Browse filings by year
17 yearsMarket data
Market data not available
Price history
Peer group · Water collection, treatment and supply
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
Acea
A multi-utility company managing water, energy, and environ…
|
ACE | IT | Water supply; sewerage, waste m… |
|
AEGEA SANEAMENTO E PARTICIPAÇÕES S.A.
Manages water supply and sewage treatment concessions for o…
|
— | BR | Water supply; sewerage, waste m… |
|
AGUAS ARAUCANIA S.A.
Provides comprehensive sanitary services, including potable…
|
— | CL | Water supply; sewerage, waste m… |
|
AGUAS DE ANTOFAGASTA S.A.
A regulated water and sanitation utility providing comprehe…
|
— | CL | Water supply; sewerage, waste m… |
|
AGUAS DEL ALTIPLANO S.A.
Provides comprehensive water and wastewater management, pot…
|
— | CL | Water supply; sewerage, waste m… |
|
AGUAS MAGALLANES S.A.
Utility company providing water capture, treatment, distrib…
|
— | CL | Water supply; sewerage, waste m… |
|
ALIRAN IHSAN RESOURCES BERHAD
Provider of comprehensive water and wastewater solutions fo…
|
— | MY | Water supply; sewerage, waste m… |
|
Alkhorayef Water and Power Technologies Co.
Provides engineering, construction, and O&M for water and p…
|
2081 | SA | Water supply; sewerage, waste m… |
|
AMERICAN STATES WATER CO
Holding company with water, electric, and contracted milita…
|
AWR | US | Water supply; sewerage, waste m… |
|
American Water Works Company, Inc.
A large, regulated water and wastewater utility providing e…
|
AWK | US | Water supply; sewerage, waste m… |
CALIFORNIA WATER SERVICE GROUP via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/31459/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=31459 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=31459 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=31459 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 31459}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for CALIFORNIA WATER SERVICE GROUP (id: 31459)"
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