Who Regulates Dewatering Operations?
In California, there are nine Regional Water Quality Control Boards (RWQCBs) which regulate dewatering operations through the National Pollutant Discharge Elimination System (NPDES). Each Regional Board defines which types of dewatering effluent (discharge) are regulated under an NPDES permit within its Region. All dewatering effluent discharged into storm drainage system or directly into U.S. water must done so under the terms and provisions of an NPDES permit.
