ECOLAB INC. — Director's Dealing 2010

May 5, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ECOLAB INC (ECL)
CIK: 0000031462
Period of Report: 2010-05-01

Reporting Person: Berger Larry L (Senior VP & CTO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-01	Common Stock	F	436	$48.98	Disposed	3128	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	63.788	Indirect

Footnotes

F1: Reflects the reporting person's payment of minimum statutory tax obligations by withholding shares of Ecolab Common Stock incident to the vesting of a restricted stock award issued in accordance with Rule 16b-3.

F2: Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of March 31, 2010. Includes 0.866 UNITS acquired since the reporting person's last report. (The 63.788 UNITS are the equivalent of approximtely 119 shares of the issuer's Common Stock.)