David F. Duvick
		ASSOCIATE GENERAL COUNSEL -
		CORPORATE, TAX & TREASURY
		AND ASSISTANT SECRETARY
	651 250 2492	1 ECOLAB PLACE
	651 250 2573	ST. PAUL, MN 55102-1390
		Dave.duvick@ecolab.com

March 5, 2021

U.S. Securities and Exchange Commission

100 F. Street, N.E.

Washington, D.C. 20549

Re:  Notice of disclosure filed in Exchange Act Quarterly Report under Section 219 of the Iran Threat Reduction and Syria Humans Rights Act of 2012 and Section 13(r) of the Exchange Act

Ladies and Gentlemen:

Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities Exchange Act of 1934, as amended, notice is hereby provided that Ecolab Inc. has made disclosure pursuant to those provisions in its Annual Report on Form 10-K for the fiscal year ended December 31, 2020, which was filed with the Securities and Exchange Commission on February 26, 2021.

Sincerely,

ECOLAB INC.

By:  /s/David F. Duvick                                  

David F. Duvick

Associate General Counsel -

Corporate, Tax & Treasury

and Assistant Secretary