Chazy T STP and Onsite Systems - Town of Chazy, New York Wastewater Treatment Plant

Chazy T STP and Onsite Systems is a municipal wastewater treatment facility located in the Town of Chazy, Clinton County, New York. Serving a population of approximately 670 residents, the plant provides secondary treatment to manage local wastewater. The facility operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal plants discharging to surface waters. The plant has a designed capacity of 321.76 megaliters and treats an annual discharge volume of 227.13 megaliters. As a secondary treatment facility, it utilizes biological processes to reduce organic matter and suspended solids before discharge. The plant's proximity to Lake Champlain, within 10 km of the coast, places it in a sensitive environmental context where nutrient removal is critical to prevent eutrophication. The treated effluent from Chazy T STP ultimately reaches Lake Champlain, a large freshwater lake that drains northward via the Richelieu River into the St. Lawrence River and eventually the Atlantic Ocean. Lake Champlain supports diverse aquatic life and is an important recreational and ecological resource. The plant's operations are subject to state and federal permits that regulate discharge quality to protect this vital water body.

The plant discharges into the Lake Champlain watershed, which drains via the Richelieu River into the St. Lawrence River and the Atlantic Ocean. Lake Champlain is a large freshwater lake that supports diverse aquatic ecosystems, including coldwater fisheries and migratory birds. The lake is sensitive to nutrient inputs, and secondary treatment helps reduce organic loading, though additional nutrient removal may be needed to prevent algal blooms in this ecologically important water body.