EXHIBIT (24.1)

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, That the undersigned, a director of Ecolab Inc., a Delaware corporation, does hereby make, nominate and appoint DOUGLAS M. BAKER, JR., JAMES J. SEIFERT and THEODORE D. HERZOG, and each of them, to be my attorney-in-fact, with full power and authority to sign his name to the Annual Report on Form 10-K of Ecolab Inc. for the fiscal year ended December 31, 2014, and all amendments thereto, provided that the Annual Report 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.

IN WITNESS WHEREOF, I have hereunto affixed my signature this 27th day of February, 2015.

/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