Greenwood STP - Advanced Wastewater Treatment in Town of Eaton, Wisconsin

Greenwood STP is a municipal wastewater treatment facility located on River Road in the Town of Eaton, Clark County, Wisconsin. The plant serves a population of approximately 2,841 residents, providing advanced treatment to protect public health and the environment. As a smaller-scale facility, it plays a key role in managing wastewater for this rural community. The plant operates with advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,983.55 cubic meters per day and an actual discharge volume of 991.78 cubic meters per day, the facility operates at about half its capacity. Under the U.S. Clean Water Act, such plants are regulated through National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources, ensuring effluent quality meets state and federal standards. The treated wastewater from Greenwood STP is discharged to a nearby water body, ultimately contributing to the Black River watershed, which flows into the Mississippi River. This region supports diverse aquatic life and is part of a larger drainage system that reaches the Gulf of Mexico. The plant's advanced treatment helps reduce nutrient loading, protecting downstream ecosystems from eutrophication and maintaining water quality for recreation and wildlife.

Greenwood STP discharges into a local stream that is part of the Black River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. This region supports diverse aquatic species and is an important migratory corridor for birds and fish. The advanced treatment at this plant helps minimize nutrient and pollutant loads, protecting downstream water quality and ecological health in a sensitive riverine environment.