StacksVerified U.S. regulatory reference

40 CFR §463.3

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The “monthly average” regulatory values shall be the basis for the monthly average effluent limitations guidelines and standards in direct discharge permits. Compliance with the monthly average effluent limitations guidelines and standards is required regardless of the number of samples analyzed and averaged.