40 CFR § 425.16
Pretreatment standards for new sources (PSNS)
June 9, 2020
Except as provided in 40 CFR 403.7 and 425.04, any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the pretreatment standards contained in §425.15.