US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 451 — CONCENTRATED AQUATIC ANIMAL PRODUCTION POINT SOURCE CATEGORYSubpart A — Flow-Through and Recirculating Systems Subcategory451.1040 C.F.R. § 451.10Applicability.Last amended: 2016Year: 2026Length: 32 wordsOfficial source Cite as 40 C.F.R. § 451.10 (2026)This subpart applies to the discharge of pollutants from a concentrated aquatic animal production facility that produces 100,000 pounds or more per year of aquatic animals in a flow-through or recirculating system.Next40 C.F.R. § 451.11