Consolidated Koshkonong SD STP - Town of Fulton, Wisconsin Wastewater Treatment

Consolidated Koshkonong SD STP is a municipal wastewater treatment facility located in the Town of Fulton, Rock County, Wisconsin. Serving a population of approximately 6,292, the plant is part of the region's infrastructure for managing domestic wastewater. Its location in southern Wisconsin places it within the Rock River watershed, which ultimately drains to the Mississippi River. As a U.S. facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Wisconsin Department of Natural Resources. For a community of this size, secondary treatment is typically required to meet effluent limits for biochemical oxygen demand and total suspended solids. Regulatory compliance ensures appropriate treatment for the population served. The treated effluent from the plant discharges into a local water body that flows into the Rock River, a tributary of the Mississippi River. This downstream connection links the plant to the larger Mississippi River Basin, which supports diverse aquatic life and provides drinking water for millions. The plant's operations contribute to protecting water quality in the Rock River and its receiving waters.

The plant discharges into a local water body that is part of the Rock River watershed. The Rock River flows south through Wisconsin and Illinois, joining the Mississippi River near Rock Island, Illinois. This river system supports a variety of fish species and provides habitat for migratory birds. The Mississippi River downstream is a major ecological corridor, and maintaining water quality in its tributaries is essential for the health of the entire basin.