U.S. Code of Federal Regulations
Regulations most recently checked for updates: Oct 07, 2022
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart must achieve the following standards by September 21, 2001:
Pretreatment Standards (PSES)
|Regulated parameter||Maximum daily 1||Maximum monthly average 1|
1 mg/L (ppm).