FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0104 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person *   Corkrean John J 2. Date of Event Requiring Statement (Month/Day/Year) 04/16/2008 3. Issuer Name and Ticker or Trading Symbol ECOLAB INC [ECL] (Last) (First) (Middle) 370 WABASHA STREET N 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP & Corporate Controller 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) SAINT PAUL, MN 55102 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 1 D   Common Stock 1,345.595 (9) I By Ecolab Savings Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (Right to Buy)	08/18/2001(1)	08/18/2010	Common Stock	8,200	$ 19.2656	D	Â
Employee Stock Option (Right to Buy)	12/06/2002(2)	12/06/2011	Common Stock	8,000	$ 18.96	D	Â
Employee Stock Option (Right to Buy)	12/05/2003(3)	12/05/2012	Common Stock	7,600	$ 24.34	D	Â
Employee Stock Option (Right to Buy)	12/11/2004(4)	12/11/2013	Common Stock	6,000	$ 27.39	D	Â
Employee Stock Option (Right to Buy)	12/09/2005(5)	12/09/2014	Common Stock	5,000	$ 34.5	D	Â
Employee Stock Option (Right to Buy)	12/07/2006(6)	12/07/2015	Common Stock	4,600	$ 34.075	D	Â
Employee Stock Option (Right to Buy)	12/06/2007(7)	12/06/2016	Common Stock	12,800	$ 45.24	D	Â
Employee Stock Option (Right to Buy)	12/05/2008(8)	12/05/2017	Common Stock	16,100	$ 49.42	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Corkrean John J 370 WABASHA STREET N SAINT PAUL, MN 55102	Â	Â	  VP & Corporate Controller	Â

Signatures

David F. Duvick, as Attorney-In-Fact for John J. Corkrean		04/18/2008
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Option granted under the Ecolab Inc. 1997 Stock Incentive Plan on August 18, 2000. The option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant.
(2)	Option granted under the Ecolab Inc. 1997 Stock Incentive Plan on December 6, 2001. The option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant.
(3)	Option granted under the Ecolab Inc. 2002 Stock Incentive Plan on December 5, 2002. The option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant.
(4)	Option granted under the Ecolab Inc. 2002 Stock Incentive Plan on December 11, 2003. The option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant.
(5)	Option granted under the Ecolab Inc. 2002 Stock Incentive Plan on December 9, 2004. The option became exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant.
(6)	Option granted under the Ecolab Inc. 2002 Stock Incentive Plan on December 7, 2005. The option will become exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant; provided, however, that if a Change in Control (as that term is defined in the 2002 Plan) of the Company occurs, then the option, if it has been outstanding for at least six months from the date of grant, will become immediately exercisable in full.
(7)	Option granted under the Ecolab Inc. 2005 Stock Incentive Plan on December 6, 2006. The option will become exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant; provided, however, that if a Change in Control (as that term is defined in the 2005 Plan) of the Company occurs, then the option, if it has been outstanding for at least six months from the date of grant, will become immediately exercisable in full.
(8)	Option granted under the Ecolab Inc. 2005 Stock Incentive Plan on December 5, 2007. The option will become exercisable, on a cumulative basis, as to one-third of the option shares (excluding any fractional portion less than one share), on each of the first and second anniversaries of the date of grant and as to the remaining option shares on the third anniversary of the date of grant; provided, however, that if a Change in Control (as that term is defined in the 2005 Plan) of the Company occurs, then the option, if it has been outstanding for at least six months from the date of grant, will become immediately exercisable in full.
(9)	Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of March 31, 2008. (The 1,354.595 UNITS are the equivalent of approximtely 2,530 shares of the issuer's Common Stock.)

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.