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On June 5, AMWA submitted comments to EPA on its draft sixth Candidate Contaminant List (CCL 6). The comments urged the Agency to use the CCL as an opportunity to prioritize limited scientific and research resources by focusing on processes and contaminants that can most likely inform SDWA’s regulatory processes. The comments also suggested methods EPA can use to improve the transparency of the CCL, and responded to specific contaminants and contaminant group listings.