Fond du Lac Regional WWTP - Wisconsin Wastewater Treatment Plant Serving Fond du Lac

The Fond du Lac Regional WWTP is a municipal wastewater treatment facility serving the city of Fond du Lac, Wisconsin, and surrounding areas. With a population served of approximately 62,965, it is classified as a medium-to-large agglomeration under US regulatory frameworks. The plant is situated in the Great Lakes Basin, less than 50 km from the Lake Michigan shoreline. As a US facility, the plant operates under the Clean Water Act, administered by the Wisconsin Department of Natural Resources. The National Pollutant Discharge Elimination System (NPDES) permit program sets effluent limits to protect water quality. Plants of this scale typically employ secondary treatment as a minimum, with potential nutrient removal to address Great Lakes water quality concerns. The plant's treated effluent discharges into the Lake Michigan watershed, ultimately reaching the lake itself. Lake Michigan is a critical freshwater resource supporting diverse aquatic life, recreational activities, and municipal water supplies. The plant's location within the Great Lakes Basin underscores its role in protecting this ecologically sensitive system from nutrient pollution and other contaminants.

The Fond du Lac Regional WWTP discharges into the Lake Michigan watershed, with the lake serving as the ultimate receiving water body. Lake Michigan is part of the Great Lakes system, which holds 21% of the world's surface freshwater and supports a complex ecosystem including native fish species and migratory birds. The plant's operations are critical to preventing eutrophication and maintaining water quality in this ecologically sensitive basin.