SUMMITVILLE WWTP - Secondary Treatment Plant in Madison County, Indiana

SUMMITVILLE WWTP is a municipal wastewater treatment facility located in Madison County, Indiana, United States. The plant serves a population of 1,201 and operates under secondary treatment, which is the standard for small communities under the US Clean Water Act. As a secondary treatment plant, SUMMITVILLE WWTP uses biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 416.39 m³/day and currently treats an average of 378.54 m³/day, indicating it operates below its maximum capacity. The facility is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent from SUMMITVILLE WWTP is discharged into a local water body, likely a tributary of the Mississippi River basin. The plant's location inland, away from coastal areas, reduces direct marine impact. The surrounding watershed supports agricultural and rural communities, and the plant plays a key role in maintaining local water quality.

The plant discharges into a receiving water body within the Mississippi River basin, which ultimately drains into the Gulf of Mexico. The local watershed is primarily agricultural, and the plant's secondary treatment helps reduce nutrient loading that could contribute to downstream eutrophication. The facility's inland location minimizes direct coastal impacts, but its effluent still influences the broader riverine ecosystem.