Dekorra UD 1 WWTP - Advanced Wastewater Treatment in Town of Dekorra, Wisconsin

Dekorra UD 1 WWTP is a municipal wastewater treatment plant located in the Town of Dekorra, Columbia County, Wisconsin, United States. The facility serves a population of approximately 1,200 residents, providing essential sanitation services for this small community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 397.47 megaliters per year and an actual discharge volume of 302.83 megaliters per year, the plant operates below its capacity, indicating room for future growth. As a US facility, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets strict effluent limits to protect water quality. The treated effluent is discharged into a receiving water body that ultimately drains into the Wisconsin River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. The advanced treatment helps protect downstream aquatic ecosystems and supports the ecological health of the region's waterways.

The plant discharges into a local water body that is part of the Wisconsin River basin, which flows into the Mississippi River and then the Gulf of Mexico. This watershed supports diverse aquatic life, including fish and macroinvertebrates, and provides habitat for migratory birds. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in downstream waters.