U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 437Subpart A - Subpart A—Metals Treatment and Recovery
§ 437.10 - Applicability.
§ 437.11 - Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).
§ 437.12 - Effluent limitations attainable by the application of the best conventional pollutant control technology (BCT).
§ 437.13 - Effluent limitations attainable by the application of the best available technology economically achievable (BAT).
§ 437.14 - New source performance standards (NSPS).
§ 437.15 - Pretreatment standards for existing sources (PSES).
§ 437.16 - Pretreatment standards for new sources (PSNS).
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