Maple Grove Estates SD STP - Advanced Wastewater Treatment in West Salem, Wisconsin

Maple Grove Estates SD STP is a municipal wastewater treatment facility located in West Salem, Wisconsin, United States. The plant serves a small community of approximately 250 residents, reflecting its role in managing local wastewater for a rural or suburban area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 132.49 thousand cubic meters per day and a current discharge volume of 18.93 thousand cubic meters per day, the facility operates well below its capacity. Under the U.S. Clean Water Act, such plants are regulated through National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources, ensuring compliance with water quality standards. The treated effluent is discharged into the local watershed, which drains into the Mississippi River via the La Crosse River. This river system supports diverse aquatic life and provides recreational and ecological value. The plant's advanced treatment helps protect downstream water quality in the Mississippi River basin, a major ecological corridor in North America.

The plant discharges into the La Crosse River watershed, which flows into the Mississippi River, one of the largest river systems in North America. The Mississippi River supports a wide range of aquatic species and serves as a critical migratory route for birds and fish. The advanced treatment at this facility helps reduce nutrient loading, which is important for preventing eutrophication in downstream waters, including the Gulf of Mexico hypoxic zone.