Exhibit 24.1

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That the undersigned, a Director of Ecolab Inc., a Delaware corporation (“Corporation”), does hereby make, nominate and appoint DOUGLAS M. BAKER, JAMES J. SEIFERT and THEODORE D. HERZOG, and each of them, individually, to be my attorney-in-fact, with full power and authority to sign his name to a Registration Statement on Form S-8 relating to the registration under the Securities Act of 1933 of not more than 8,000,000 shares of Ecolab Inc. Common Stock, par value $1.00 per share, for the Ecolab Canada Share Purchase Plan, plus an indeterminate amount of interests to be offered or sold, all for the Ecolab Savings Plan and ESOP for Traditional Benefit Employees, provided that the Registration Statement and any amendments thereto, in final form, be approved by said attorney-in-fact, and his name, when thus signed, shall have the same force and effect as though I had manually signed said document or documents.

IN WITNESS WHEREOF, I have hereunto affixed my signature this 30th day of October, 2014.

/s/Barbara J. Beck

Barbara J. Beck

/s/Les S. Biller

Les S. Biller

/s/Carl M. Casale

Carl M. Casale

/s/Stephen I. Chazen

Stephen I. Chazen

/s/Jerry A. Grundhofer

Jerry A. Grundhofer

/s/Arthur J. Higgins

Arthur J. Higgins

/s/Joel W. Johnson

Joel W. Johnson

/s/Michael Larson

Michael Larson

/s/Jerry W. Levin

Jerry W. Levin

/s/Robert L. Lumpkins

Robert L. Lumpkins

/s/Victoria J. Reich

Victoria J. Reich

/s/Suzanne M. Vautrinot

Suzanne M. Vautrinot

/s/John J. Zillmer

John J. Zillmer