Edwards V STP and On Sites - Secondary Wastewater Treatment in Edwards, New York

Edwards V STP and On Sites is a municipal wastewater treatment facility located in Edwards, a small town in Saint Lawrence County, New York. The plant serves a population of approximately 450 residents, reflecting its role in a rural community. As part of the state's wastewater infrastructure, it operates under the regulatory framework of the US Clean Water Act, which governs discharge permits and treatment standards. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity is 302.83 million gallons per year, with an actual discharge volume of 136.28 million gallons per year, indicating operational headroom. Facilities of this scale in New York are typically regulated under the State Pollutant Discharge Elimination System (SPDES), administered by the New York State Department of Environmental Conservation. The treated effluent is discharged into a local waterway that drains into the Oswegatchie River, a tributary of the Saint Lawrence River. The Saint Lawrence River flows into the Gulf of Saint Lawrence and ultimately the Atlantic Ocean. The plant's operations help protect the downstream aquatic ecosystem, which supports diverse fish populations and recreational uses.

The plant discharges into a local stream that feeds the Oswegatchie River, a major tributary of the Saint Lawrence River. The Saint Lawrence River is a critical waterway connecting the Great Lakes to the Atlantic Ocean, supporting diverse aquatic life including migratory fish species. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, protecting downstream water quality in this ecologically sensitive watershed.