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 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 * HANDLEY THOMAS W   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 and COO (Last) (First) (Middle) 370 WABASHA STREET NORTH 3. Date of Earliest Transaction (Month/Day/Year) 08/24/2016 (Street) SAINT PAUL, MN 55102 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 05/24/2016   G V 717 D $ 0 717 (1) I By GRAT No. 1 Common Stock 05/24/2016   G V 717 A $ 0 717 I By child #1 trust Common Stock 05/24/2016   G V 717 D $ 0 0 I By GRAT No. 1 Common Stock 05/24/2016   G V 717 A $ 0 717 I By child #2 trust Common Stock               27,675 (2) I By GRAT No. 2 Common Stock 08/24/2016   M   20,000 A $ 35.63 95,985.819 (1) (2) D   Common Stock 08/24/2016   F(3)   12,668 D $ 121.865 83,317.819 D   Common Stock               553.133 (4) I By Ecolab Savings Plan

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

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction 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 (Month/Day/Year)

7. Title and Amount of Underlying Securities (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

Employee Stock Option (Right to Buy)

$ 35.63

08/24/2016

M

20,000

12/03/2009(5)

12/03/2018

Common Stock

20,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HANDLEY THOMAS W 370 WABASHA STREET NORTH SAINT PAUL, MN 55102			President and COO

Signatures

/s/ David F. Duvick, as Attorney-in-Fact for Thomas W. Handley		08/26/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The reporting person is trustee and sole annuitant of GRAT No. 1, a grantor retained annuity trust. On March 9, 2016 and March 10, 2016, GRAT No. 1 distributed 17,715 shares and 28.155 shares, respectively, of Ecolab Inc. common stock out of the 19,177.155 shares then held by GRAT No. 1 to the reporting person as an annuity payment.
(2)	The reporting person is trustee and sole annuitant of GRAT No. 2, a grantor retained annuity trust. On August 12, 2016 , GRAT No. 2 distributed 24,100 shares of Ecolab Inc. common stock out of the 51,775 shares then held by GRAT No. 2 to the reporting person as an annuity payment.
(3)	Reflects the reporting person's payment of the exercise price and withholding taxes for a stock option issued in accordance with Rule 16b-3 by delivering or withholding shares of Ecolab Inc. common stock.
(4)	Number of UNITS in the Ecolab Stock Fund of the Ecolab Savings Plan (401(k) Plan) as of July 31, 2016. Includes 3.221 UNITS acquired since the reporting person's last report. (The 553.133 UNITS are the equivalent of approximately 1,019 SHARES of Ecolab Inc. common stock.)
(5)	Option granted on December 3, 2008 under the Ecolab Inc. 2005 Stock Incentive Plan. 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 shares on the third anniversary of the date of grant.

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