SLINGER STP - Slinger, Wisconsin Wastewater Treatment Plant

SLINGER STP is a municipal wastewater treatment plant located in Slinger, Washington County, Wisconsin. Serving a population of about 4,915, it is classified as a small agglomeration under U.S. regulatory frameworks. The plant is situated inland, away from major coastal influences, and its operations are overseen by state and federal environmental agencies. As a small-scale facility, SLINGER STP is expected to meet secondary treatment standards under the Clean Water Act, which requires removal of at least 85% of biochemical oxygen demand and suspended solids. The plant's designed capacity is 1.00 million gallons per day, indicating it is sized appropriately for its service population. Treatment processes typically include biological treatment, sedimentation, and disinfection before discharge. The plant discharges treated effluent into local waterways within the Lake Michigan basin. The receiving waters eventually drain into Lake Michigan, a vital freshwater resource supporting diverse aquatic life and providing drinking water for millions. The plant's operations help protect downstream water quality and ecosystem health in this sensitive Great Lakes region.

SLINGER STP discharges into tributaries of the Milwaukee River, which flows into Lake Michigan. Lake Michigan is a critical freshwater ecosystem supporting native fish species, migratory birds, and recreational activities. The plant's effluent must meet stringent water quality standards to protect this sensitive Great Lakes environment from nutrient pollution and other contaminants.