Frequent Questions

I read that the National Primary Drinking Water Regulations apply to public water systems in all states. Does this include the District of Columbia?

Yes. The National Primary Drinking Water Regulations apply to public water systems in all 50 states, the District of Columbia, Guam, the Commonwealth of Puerto Rico, the Northern Marianna Islands, the Virgin Islands, American Samoa, and the Trust Territory of the Pacific Islands (SDWA 1401(13)(A), 1411).
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