Exhibit 15.1
December 2, 2011
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
Commissioners:
We are aware that our reports dated May 5, 2011, August 4, 2011 and October 31, 2011 on our review of interim financial information of Ecolab Inc. for the three-month periods ended March 31, 2011 and 2010, for the three and six-month periods ended June 30, 2011 and 2010 and for the three and nine-month periods ended September 30, 2011 and 2010 and included in the Company’s quarterly reports on Form 10-Q for the quarters ended March 31, 2011, June 30, 2011 and September 30, 2011, respectively, are incorporated by reference in the Post-Effective Amendment on Form S-8 to its Registration Statement on Form S-4 dated December 2, 2011.
Very truly yours,
/s/ PricewaterhouseCoopers LLP |
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PricewaterhouseCoopers LLP |
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Minneapolis, Minnesota