Milladore STP - Secondary Wastewater Treatment Plant in Milladore, Wisconsin

Milladore STP is a municipal wastewater treatment plant located in Milladore, Wisconsin, a small community in Wood County. The plant serves a population of 275 and provides secondary treatment, which is the minimum standard for municipal wastewater under the U.S. Clean Water Act. The plant has a designed capacity of 529.96 megaliters per year and currently discharges 151.42 megaliters per year. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Wisconsin Department of Natural Resources. The treated effluent is discharged into a local water body that ultimately drains into the Wisconsin River basin, which flows into the Mississippi River and then to the Gulf of Mexico. The plant's operations help protect downstream water quality and aquatic ecosystems in the region.

Milladore STP discharges into a tributary of the Wisconsin River, which flows southward to join the Mississippi River. The Wisconsin River basin supports diverse aquatic life, including fish species such as walleye and smallmouth bass. The plant's secondary treatment reduces organic pollutants and suspended solids, helping to maintain water quality in the downstream river system. The area is part of the Upper Mississippi River watershed, which is ecologically significant for migratory birds and aquatic habitats.