Stevens Point STP - Wastewater Treatment Plant in Stevens Point, Wisconsin

Stevens Point STP is a municipal wastewater treatment facility located in Stevens Point, Portage County, Wisconsin. The plant serves a population of approximately 27,202, placing it in the medium-agglomeration category for US facilities. It is situated inland, more than 50 km from the Great Lakes coast, and discharges into the Wisconsin River watershed. As a US facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program established by the Clean Water Act. For a plant of this scale, secondary treatment is typically required, and permits specify effluent limits for biochemical oxygen demand, total suspended solids, and other parameters. The Wisconsin Department of Natural Resources is the likely permitting authority. The plant's treated effluent enters the Wisconsin River, which flows southward to the Mississippi River and ultimately to the Gulf of Mexico. The Wisconsin River supports diverse aquatic life and is an important recreational and ecological corridor. The plant's discharge contributes to maintaining water quality in this downstream system.

The plant discharges into the Wisconsin River, a major tributary of the Mississippi River. The Wisconsin River basin supports diverse aquatic ecosystems, including fish species such as walleye and smallmouth bass. Downstream, the Mississippi River carries the treated effluent to the Gulf of Mexico, where nutrient loading is a concern. The plant's treatment performance is critical for protecting local water quality and downstream habitats.