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§141.521. What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration? — Inbound Citations

40 C.F.R. § 141.521

Statutory Authority

42 U.S.C. § 300f

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Cited by 1 regulation in release Current.

Citations to 40 C.F.R. § 141.521 as a whole

40 C.F.R. § 141.520

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If you are a subpart H system serving fewer than 10,000 persons which does not provide filtration, you must continue to comply with all of the filtration avoidance criteria in § 141.71, as well as the additional watershed control requirements in § 141.521.