FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Fyrwald J Erik 		2. Issuer Name and Ticker or Trading Symbol

ECOLAB INC [ ECL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
President
(Last)          (First)          (Middle)

ECOLAB INC., 370 WABASHA STREET N. 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/28/2012
(Street)

ST. PAUL, MN 55102
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock   2/28/2012     M    54852   A   (1) 140039   D    
Common Stock   2/28/2012     F    22737   D $61.75   129824   (2) D    
Common Stock                  46109   I   Erik Fyrwald GRAT  
Common Stock                  3293   I   JAK Limited Partnership  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units     (1) 2/28/2012     M         54852    2/28/2012   2/28/2012   Common Stock   54852     (1) 0   D    

Explanation of Responses:
( 1)  Each restricted stock unit was the economic equivalent of one share of Ecolab common stock and was settled for an equivalent number of shares of Ecolab common stock.
( 2)  The direct ownership total includes 12,522 shares of Ecolab common stock that were previously reported as being indirectly owned by the reporting person in the form of the J. Erik Fyrwald Trust. The characteristics of the trust allow aggregate reporting of the trust shares with other shares directly owned by the reporting person.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Fyrwald J Erik
ECOLAB INC.
370 WABASHA STREET N.
ST. PAUL, MN 55102

President

Signatures
David F. Duvick, as Attorney-in-Fact for J. Erik Frywald 3/1/2012
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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.
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