The New York State Department of Environmental Conservation (DEC) today announced the issuance of the final State Pollutant Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Municipal Separate Storm Sewer Systems (MS4s). The permit incorporates changes made in response to extensive stakeholder input and public comments and will help prevent runoff and other pollutants from negatively impacting water quality, habitat, and wildlife across New York State.

There are currently more than 500 regulated small MS4 operators across the state, including municipalities (e.g., cities, towns, or villages), counties, State agencies, and other institutions. Since 2003, DEC has issued MS4 permits to address urban stormwater.

The permit, which will take effect on Jan. 3, 2024, requires MS4 Operators to develop a stormwater management program meant to reduce the discharge of pollutants and protect water quality.

Among other requirements the permit requires MS4 operators to conduct routine inspections of monitoring locations to detect illicit discharges and structural concerns, map stormwater infrastructure, and prioritize efforts geared towards improving water quality and increasing efficiency. The permit also details, in a clear, specific, and measurable way, what is required to meet statutory and regulatory requirements and ensures the applicable requirements are enforceable and understandable to MS4 operators and the public.

For more information, go to https://www.dec.ny.gov/environmental-protection/water/water-quality/stormwater/ms4-permit-forms