Surface Water Discharge Permit (Industrial) Details

The industrial surface water discharge permit is a combined state and federal permit under the National Pollutant Discharge Elimination System (NPDES). This permit is issued for industrial facilities that discharge to State surface waters. The permit is designed to meet federal effluent guidelines when applicable and also to ensure the discharge satisfies the State of Maryland water quality standards.

All industrial, commercial, or institutional facilities that discharge wastewater (or storm water from certain facilities) to surface waters of Maryland may need this permit. Alternatively, an industrial discharge to the municipal wastewater collection system may require a pretreatment permit.