Antwerp V WWTP - Secondary Wastewater Treatment in Village of Antwerp, New York

Antwerp V WWTP is a municipal wastewater treatment facility located at 114 Main Street in the Village of Antwerp, Jefferson County, New York. The plant serves a small population of 420 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for municipal plants of this scale. The plant has a designed capacity of 454.25 megaliters per year and currently discharges 121.13 megaliters annually, indicating it operates well below its capacity. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids before discharging treated effluent. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program administered by the New York State Department of Environmental Conservation. The treated wastewater from Antwerp V WWTP is discharged into a local water body that ultimately drains into the St. Lawrence River watershed. The plant's location more than 10 km from the coast reduces direct marine impact, but its discharge contributes to the freshwater ecosystem of the region, which supports diverse aquatic life and recreational activities.

The plant discharges into a tributary of the Oswegatchie River, which flows into the St. Lawrence River and eventually into the Gulf of St. Lawrence and the Atlantic Ocean. The local watershed is part of the larger St. Lawrence River basin, an ecologically significant area that supports diverse fish populations and migratory birds. The plant's secondary treatment helps protect downstream water quality in this sensitive freshwater environment.