Champlain V STP - Secondary Wastewater Treatment in Village of Champlain, New York

Champlain V STP is a municipal wastewater treatment facility located at 98 River Street in the Village of Champlain, Clinton County, New York. The plant serves a population of approximately 1,173 residents and operates with a designed capacity of 2,460.51 thousand gallons per day, currently discharging 753.30 thousand gallons per day. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. Under the U.S. Clean Water Act, the plant is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. For a plant of this scale serving a small community, secondary treatment is the standard requirement, and the facility's discharge volume indicates it is operating well below its designed capacity. The plant's proximity to the coast (within 10 km) means its treated effluent likely enters a waterway that drains into Lake Champlain or the Richelieu River system, ultimately reaching the St. Lawrence River and the Atlantic Ocean. This coastal location underscores the importance of effective nutrient removal to prevent eutrophication in sensitive freshwater and marine ecosystems.

The plant's discharge likely enters a tributary of Lake Champlain, a large freshwater lake that drains north via the Richelieu River into the St. Lawrence River and eventually the Atlantic Ocean. Lake Champlain is ecologically significant, supporting diverse aquatic life and serving as a critical habitat for fish and migratory birds. The plant's coastal proximity and secondary treatment level mean that nutrient loads, particularly phosphorus, must be carefully managed to avoid algal blooms and hypoxia in the lake and downstream waters.