Cedar Grove STP - Advanced Wastewater Treatment in Cedar Grove, Wisconsin

Cedar Grove STP is an advanced wastewater treatment facility located in Cedar Grove, Sheboygan County, Wisconsin. The plant serves a population of approximately 2,010 residents, providing tertiary-level treatment to protect local water quality. As a coastal facility within 10 kilometers of Lake Michigan, it plays a critical role in managing wastewater from this small community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,589.87 cubic meters per day and a current discharge volume of 567.81 cubic meters per day, the facility operates well below its capacity. Under the U.S. Clean Water Act, such plants must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Wisconsin Department of Natural Resources, ensuring effluent meets strict water quality standards. The treated effluent from Cedar Grove STP ultimately drains into Lake Michigan, one of the largest freshwater lakes in the world. The lake supports diverse aquatic life and provides drinking water for millions. The plant's advanced treatment helps reduce nutrient loading, which is critical for preventing algal blooms and maintaining the ecological health of this vital Great Lakes ecosystem.

Cedar Grove STP discharges treated wastewater into the Lake Michigan basin, a major freshwater resource that supports diverse aquatic species and serves as a drinking water source for millions. The plant's location within 10 kilometers of the coast means its effluent directly influences nearshore water quality. Advanced treatment at this facility helps minimize nutrient pollution, which is essential for controlling eutrophication and protecting the lake's ecological balance.