Chilton STP Wastewater Treatment Plant, Chilton, Wisconsin

Chilton STP is a municipal wastewater treatment plant located in Chilton, Wisconsin, United States. The facility serves a population of about 3,881 residents and has a designed capacity of 1.00 million gallons per day, indicating it is sized for a small community. As a plant in the United States, Chilton STP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. Plants of this scale typically employ secondary treatment to meet federal and state standards for organic and solids removal. The plant discharges treated effluent into a local waterway, likely within the Lake Michigan basin. Its location in eastern Wisconsin places it in a region where surface waters ultimately drain to Lake Michigan, supporting aquatic ecosystems and recreational uses. Proper treatment helps protect downstream water quality and the ecological health of the Great Lakes.

Chilton STP discharges into a receiving water body that is part of the Lake Michigan watershed. Lake Michigan is a major freshwater resource supporting diverse aquatic life, including fish species such as lake trout and whitefish. The plant's effluent must meet water quality standards to prevent nutrient enrichment and protect the lake's ecological balance. The surrounding area is primarily agricultural and residential, so the plant plays a key role in managing local water quality.