Brillion STP Wastewater Treatment Plant | Brillion, Wisconsin

Brillion STP is a municipal wastewater treatment facility located in Brillion, Calumet County, Wisconsin. The plant serves a population of approximately 3,000 people, classifying it as a small community system under U.S. Environmental Protection Agency (EPA) guidelines. Its location in the Great Lakes region places it within a sensitive freshwater ecosystem. As a U.S. facility, Brillion STP operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits based on water quality standards. The plant's designed capacity is 1.00 million gallons per day, indicating it is sized for modest flows typical of small towns. Treatment processes are expected to meet secondary treatment standards as required by the Clean Water Act. The plant discharges to a receiving water body within the Lake Michigan basin, ultimately draining into Lake Michigan. This watershed supports diverse aquatic life and provides drinking water for millions. The facility's performance is critical to protecting downstream water quality and recreational uses in the region.

Brillion STP discharges to a tributary of the Lake Michigan basin, with treated effluent eventually reaching Lake Michigan. Lake Michigan is a vital freshwater resource supporting fisheries, recreation, and municipal water supplies. The watershed is ecologically sensitive, hosting diverse species including lake trout and migratory birds. Protecting water quality in this basin is essential for maintaining the health of the Great Lakes ecosystem.