Necedah STP - Secondary Wastewater Treatment Plant in Necedah, Wisconsin

Necedah STP is a municipal wastewater treatment facility located in Necedah, Wisconsin, United States. The plant serves a small population of 938 residents, providing secondary treatment to meet state and federal water quality standards. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. With a designed capacity of 946.35 megaliters and an annual discharge volume of 272.55 megaliters, the facility has capacity to accommodate future growth. The treatment process ensures that effluent meets regulatory limits before discharge. The treated effluent is discharged into a local waterway that ultimately drains into the Mississippi River basin. This region supports diverse aquatic life and is part of the Upper Mississippi River watershed, which provides critical habitat for fish and migratory birds. Proper treatment helps protect downstream water quality and ecosystem health.

Necedah STP discharges into a tributary of the Wisconsin River, which flows into the Mississippi River. The Mississippi River basin is a major ecological corridor supporting diverse fish, mussel, and bird species. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream aquatic habitats and recreational waters.