US EPA

Drinking Water Requirements for States and Public Water Systems

Guidance Manuals for the Surface Water Treatment Rules

These guidance documents support the Surface Water Treatment Rules and the treatment requirements for public water systems complying with those rules. They provide guidance for public water systems that need to consider changes to their treatment processes to ensure compliance with requirements of the Surface Water Treatment Rule.

For more information, please see the Surface Water Treatment Rules page.

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Drinking Water Requirements for States and Public Water Systems