The drinking water regulation timeline shows when more than 90 drinking water contaminants were regulated, revised, or removed from regulation. For each regulation, the table contains infomation including the month and year of Federal Register publication, the name of the regulation, the number of contaminants in the regulation, and the names of contaminants regulated (or deleted) under that regulation.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Regulation Timeline: Contaminants Regulated Under the Safe Drinking Water Act (PDF)(2 pp, 82 K, September 2015)