40 CFR 410.44 - Pretreatment standards for existing sources (PSES).

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

View all text of Subpart D [§ 410.40 - § 410.47]

§ 410.44 - Pretreatment standards for existing sources (PSES).

Any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403.