Madison WWTP and Sewer System - Ohio Wastewater Treatment Plant

Madison WWTP and Sewer System is a municipal wastewater treatment facility located in Madison, Ohio, serving a population of approximately 2,921 residents. The plant is situated in Lake County, near the shores of Lake Erie, and is part of the regional infrastructure managing wastewater for this small community. The plant has a designed capacity of 1.00 million gallons per day. As a US facility, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. For small agglomerations like this, secondary treatment is typically required to meet water quality standards. The treated effluent is discharged into the Lake Erie watershed, which ultimately drains into the Great Lakes system. Lake Erie supports diverse aquatic life and provides drinking water for millions. The plant's operations are critical to protecting this vital freshwater resource from nutrient pollution and pathogens.

The plant discharges into the Lake Erie basin, part of the Great Lakes system, which is the largest group of freshwater lakes on Earth. Lake Erie is ecologically sensitive, supporting a rich fishery and serving as a major water source. The watershed includes agricultural and urban areas, making nutrient management a key concern to prevent algal blooms. Downstream, water flows through the Niagara River into Lake Ontario and eventually the St. Lawrence River to the Atlantic Ocean.