What is a water quality based effluent limit?

Frequently Asked Questions

Effluent limits are concentrations of pollutants that point source discharges are required to meet as a condition of their Wyoming Pollutant Discharge Elimination System (WYPDES) Program permit. Effluent limits can be technology based or water quality based. Water quality based effluent limits are derived from water quality criteria, either as part of a reasonable potential analysis during WYPDES permit development or as part of a total maximum daily load (TMDL).