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

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Aronson Martha Goldberg 2. Date of Event Requiring Statement (Month/Day/Year) 05/08/2014 3. Issuer Name and Ticker or Trading Symbol ECOLAB INC [ECL] (Last) (First) (Middle) 370 WABASHA STREET NORTH 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & Pres.-Global Healthcare 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 1,646 D   Common Stock 4,000 I By Martha G. Aronson Revocable Trust

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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
Restricted Stock Units	  (1)	  (1)	Common Stock	4,960	$ (1)	D	Â
Employee Stock Option (Right to Buy)	08/01/2013(2)	08/01/2022	Common Stock	31,000	$ 65.595	D	Â
Employee Stock Option (Right to Buy)	12/05/2013(3)	12/05/2022	Common Stock	19,600	$ 71.54	D	Â
Employee Stock Option (Right to Buy)	12/04/2014(4)	12/04/2023	Common Stock	13,990	$ 103.265	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Aronson Martha Goldberg 370 WABASHA STREET NORTH SAINT PAUL, MN 55102	Â	Â	  EVP & Pres.-Global Healthcare	Â

Signatures

David F. Duvick, as Attorney-in-Fact for Martha Goldberg Aronson		05/16/2014
**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)	Award granted under the Ecolab Inc. 2010 Stock Incentive Plan on August 1, 2012. Each restricted stock unit represents a contingent right to receive one share of Ecolab Inc. common stock. The units will vest, subject to continued employment, as to 2,480 units on the second anniversary of the date of grant and as to the remaining 2,480 units on the third anniversary of the date of grant.
(2)	Option granted under the Ecolab Inc. 2010 Stock Incentive Plan on August 1, 2012. 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 shares on the third anniversary of the date of grant.
(3)	Option granted under the Ecolab Inc. 2010 Stock Incentive Plan on December 5, 2012. 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 shares on the third anniversary of the date of grant.
(4)	Option granted under the Ecolab Inc. 2010 Stock Incentive Plan on December 4, 2013. 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 shares on the third anniversary of the date of grant.

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