NEW LISBON STP - Advanced Wastewater Treatment in New Lisbon, Wisconsin

NEW LISBON STP is a municipal wastewater treatment facility located in New Lisbon, Wisconsin, United States. The plant serves a population of approximately 2,335 residents and operates with a designed capacity of 1,442.24 million gallons per year, currently treating 643.52 million gallons annually. The plant employs advanced treatment processes, exceeding the secondary treatment standards required by the U.S. Clean Water Act. As a facility in the Great Lakes Basin, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets strict effluent limits to protect water quality. The treated effluent is discharged into local waterways that ultimately drain into the Wisconsin River, a tributary of the Mississippi River. This contributes to the ecological health of the Mississippi River Basin, supporting diverse aquatic life and downstream communities.

The plant discharges into the Wisconsin River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. This region supports diverse aquatic ecosystems, including fish and migratory birds. The advanced treatment helps reduce nutrient loading, protecting downstream water quality in the Mississippi River Basin.