Code of Federal Regulations Title 21. Food and Drugs § 21.112.151 What methods must I use to test the quality of water to satisfy the requirements of § 112.46?

(a) The method of analysis published by the U.S. Environmental Protection Agency (EPA), “Method 1603:  Escherichia coli (E. coli) in Water by Membrane Filtration Using Modified membrane–Thermotolerant Escherichia coli Agar (Modified mTEC), EPA–821–R–09–007),” December, 2009. The Director of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain a copy from EPA, Office of Water (4303T), 1200 Pennsylvania Avenue NW., Washington, DC 20460. You may inspect a copy at FDA's Main Library, 10903 New Hampshire Ave., Bldg. 2, Third Floor, Silver Spring, MD 20993, 301–796–2039, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to:  http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html;  or