Belleville STP - Secondary Wastewater Treatment Plant in Belleville, Wisconsin

Belleville STP is a municipal wastewater treatment facility located in Belleville, Wisconsin, United States. It serves a population of approximately 2,095 residents in the Town of Exeter and surrounding areas within Dane County. The plant is situated inland, away from coastal zones, and operates under the regulatory framework of the U.S. Clean Water Act. The plant provides secondary treatment, which is the standard level required by the U.S. Environmental Protection Agency (EPA) for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 1,309.75 units and currently treats an average daily flow of 874.43 units, indicating operational capacity below its design limit. The treated effluent is discharged into a local water body, likely a stream or river within the Rock River Basin, which ultimately drains into the Mississippi River and then to the Gulf of Mexico. The plant's operations contribute to protecting downstream water quality and aquatic ecosystems in the region.

Belleville STP discharges into a local water body within the Rock River Basin, which flows into the Mississippi River and eventually the Gulf of Mexico. The receiving waters support diverse aquatic life and are part of a larger watershed that provides habitat for fish and migratory birds. The plant's secondary treatment helps reduce nutrient and pollutant loads, mitigating impacts on downstream ecosystems.