Blue Mounds STP - Advanced Wastewater Treatment in Village of Blue Mounds, Wisconsin

Blue Mounds STP is an advanced wastewater treatment facility located in the Village of Blue Mounds, Dane County, Wisconsin. Serving a population of 781, this plant is part of the municipal infrastructure that manages wastewater for this small community in the Midwest. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 283.91 and a discharge volume of 117.35, the facility operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. Such permits set limits on effluent quality to protect receiving waters. The treated effluent from Blue Mounds STP eventually reaches the Mississippi River Basin, contributing to the overall water quality of this major watershed. The plant's advanced treatment helps reduce nutrient loading, which is critical for preventing downstream eutrophication in the Gulf of Mexico.

The plant discharges into local streams that flow into the Wisconsin River, a tributary of the Mississippi River. This watershed ultimately drains into the Gulf of Mexico, where nutrient pollution from the Mississippi Basin contributes to a large hypoxic zone. Advanced treatment at Blue Mounds STP helps reduce nitrogen and phosphorus loads, supporting downstream aquatic life and water quality.