LA VALLE STP - Town of La Valle, Wisconsin Wastewater Treatment Plant

LA VALLE STP is a municipal wastewater treatment plant located in Town of La Valle, Sauk County, Wisconsin. It serves a small population of 301 residents, reflecting the rural character of the area. The plant operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal facilities. The plant provides secondary treatment, a standard level for small communities in the US. It has a designed capacity of 215.77 volume units and a discharge volume of 128.70, indicating it operates below capacity. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources, ensuring compliance with water quality standards. The treated effluent is discharged to a receiving water body that ultimately drains into the Wisconsin River watershed and then to the Mississippi River. This connection highlights the plant's role in protecting downstream aquatic ecosystems, including the Upper Mississippi River, which supports diverse fish and wildlife habitats.

The plant discharges into local streams that flow into the Wisconsin River, a major tributary of the Mississippi River. The watershed supports diverse aquatic life, including game fish and migratory birds. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream water quality in the Mississippi River basin.