Lake Nebagamon STP: Secondary Wastewater Treatment in Lake Nebagamon, Wisconsin

Lake Nebagamon STP is a municipal wastewater treatment facility located in Lake Nebagamon, Douglas County, Wisconsin. The plant serves a small community of approximately 1,068 people, providing secondary treatment to meet state and federal water quality standards. The plant has a designed capacity of 295.26 million gallons per year and currently discharges 211.98 million gallons per year. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids. Under the U.S. Clean Water Act, such plants must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources. The treated effluent is discharged to a receiving water body that ultimately drains into Lake Superior via the Bois Brule River or similar watershed. This region is part of the Lake Superior basin, which supports diverse aquatic life and is ecologically sensitive to nutrient loading. The plant's operations help protect downstream water quality in this important Great Lakes ecosystem.

The plant discharges into a water body within the Lake Superior watershed, likely via the Bois Brule River or a tributary. Lake Superior is the largest of the Great Lakes and supports cold-water fish species such as lake trout and whitefish. The region's forests and wetlands contribute to water quality, and the plant's secondary treatment helps reduce nutrient and pollutant loads that could otherwise impact the lake's sensitive ecosystem.