40 C.F.R. § 141.520

Is my system subject to the updated watershed control requirements?

Last amended: 2016Year: 2026Length: 43 wordsOfficial source

Cite as 40 C.F.R. § 141.520 (2026)

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.
Cross-references to the CFR
141.521.141.71
40 C.F.R. § 141.520: Is my system subject to the updated watershed control requirements? | Justis AI