Fact sheet about about the second drinking water Contaminant Candidate List (CCL). EPA 815-F-05-001 February 2005 You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more. Fact Sheet: The Drinking Water Contaminant Candidate List -- The Source of Priority Contaminants for the Drinking Water Program (PDF)(6 pp, 108 K)