UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) September 12, 2013

ECOLAB INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code 1-800-232-6522

(Not applicable)

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CRF 240.13e-4(c))

Item 7.01 Regulation FD Disclosure.

On September 12, 2013, in a live presentation to investors in St. Paul, MN, Ecolab Inc. is re-confirming its 2013 full-year adjusted earnings per share forecast range of $3.48 to $3.56, representing a 17% to 19% increase over the prior year.  A replay of Ecolab’s investor  presentations will be available through September 20, 2013 on its web site located at www.ecolab.com/investor.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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