OOSTBURG STP - Advanced Wastewater Treatment in Oostburg, Wisconsin

OOSTBURG STP is a municipal wastewater treatment facility located in Oostburg, Sheboygan County, Wisconsin, United States. The plant serves a population of about 2,889 residents, reflecting its role as a small community treatment system. Its location near the western shore of Lake Michigan places it within a sensitive Great Lakes watershed. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 2,044.12 megaliters per year and a current discharge volume of 946.35 megaliters per year, the facility operates well within its capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources, ensuring compliance with federal and state water quality standards. The treated effluent from OOSTBURG STP ultimately drains into Lake Michigan, part of the Great Lakes system, which provides drinking water, recreation, and habitat for diverse aquatic species. The plant's advanced treatment helps protect this ecologically significant freshwater resource from nutrient pollution and other contaminants, supporting the health of the lake and its downstream ecosystems.

OOSTBURG STP discharges into the Lake Michigan basin, a major freshwater system that drains into the Atlantic Ocean via the St. Lawrence River. The plant's advanced treatment reduces nutrient loads, helping to prevent algal blooms and maintain water quality in this ecologically sensitive Great Lakes environment, which supports fisheries, migratory birds, and recreational use.