DOUSMAN WWTP - Advanced Wastewater Treatment in Dousman, Wisconsin

DOUSMAN WWTP is a municipal wastewater treatment plant located in Dousman, Wisconsin, serving a population of approximately 2,300 residents. The facility is situated in Waukesha County and plays a key role in managing the community's wastewater needs. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 1,324.89 thousand gallons per day and an average discharge volume of 900.93 thousand gallons per day, it operates well within its capacity. As a US facility, it operates under an EPA NPDES permit issued by the Wisconsin Department of Natural Resources, ensuring compliance with effluent limits. The treated effluent is discharged into local streams that drain into the Rock River basin, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant's advanced treatment helps protect downstream water quality and aquatic ecosystems in this agriculturally important region.

The plant discharges into tributaries of the Rock River, which flows southward through Wisconsin and Illinois before joining the Mississippi River. The Rock River watershed supports diverse aquatic life and is an important migratory corridor for fish. The advanced treatment at DOUSMAN WWTP reduces nutrient loading, helping to mitigate downstream eutrophication in the Mississippi River basin and the Gulf of Mexico hypoxic zone.