U.S. Code of Federal Regulations

Regulations most recently checked for updates: Dec 13, 2025

All TitlesTitle 40Chapter IPart 141Subpart T - Subpart T—Enhanced Filtration and Disinfection—Systems Serving Fewer Than 10,000 People
View all text of Subpart T [§ 141.500 - § 141.571]
§ 141.510 - Is my system subject to the new finished water reservoir requirements?

All subpart H systems which serve fewer than 10,000 are subject to this requirement.

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