40 CFR 142.4 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (§ 136.1 To § 149.111) — Environmental Protection Agency (Continued) (§ 136.1 To § 149.111) — Water Programs (Continued) (§ 136.1 To § 149.111) — National Primary Drinking Water Regulations Implementation (§ 142.1 To § 142.313) — General Provisions (§ 142.1 To § 142.4) — State and local authority.

4 Aug 2016

Nothing in this part shall diminish any authority of a State or political subdivision to adopt or enforce any law or regulation respecting drinking water regulations or public water systems, but no such law or regulation shall relieve any person of any requirements otherwise applicable under this part.

40 CFR 142.4