Yorkville UD WWTP - Secondary Wastewater Treatment in Yorkville, Wisconsin

Yorkville UD WWTP is a municipal wastewater treatment facility located in Yorkville, Racine County, Wisconsin. The plant serves a population of approximately 1,400 residents and operates under the regulatory framework of the U.S. Clean Water Act, which governs wastewater discharges through National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 567.81 million gallons per year and an actual discharge volume of 302.83 million gallons per year, the facility operates well within its capacity. Secondary treatment is typical for small to medium-sized communities in the United States and meets federal requirements for protecting water quality. The treated effluent is discharged into local streams that ultimately flow into the Lake Michigan watershed. Lake Michigan is a vital freshwater resource supporting diverse aquatic life, recreational activities, and municipal water supplies. The plant's operations contribute to maintaining the ecological health of this important Great Lakes ecosystem.

The plant discharges into tributaries of the Root River, which flows into Lake Michigan near Racine, Wisconsin. Lake Michigan is part of the Great Lakes system, the largest group of freshwater lakes on Earth by total area. The watershed supports a variety of fish species, including lake trout and salmon, and provides habitat for migratory birds. Protecting water quality in this basin is critical for both ecological integrity and human use, including drinking water and recreation.