Geneseo STP Wastewater Treatment Plant, Geneseo, Illinois

Geneseo STP is a municipal wastewater treatment facility located at 588 West Exchange Street in Geneseo, Illinois. The plant serves a population of about 6,500 people in this small Midwestern community, situated in Henry County. As a publicly owned treatment works (POTW), it is part of the region's essential water infrastructure. Under the US Clean Water Act, plants of this scale are typically required to provide secondary treatment as a minimum standard. The National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Illinois Environmental Protection Agency, governs discharge limits and monitoring requirements for the facility. The plant's design and operation align with federal and state regulations for small to medium agglomerations. The plant's treated effluent is discharged to a local waterway that ultimately drains into the Mississippi River basin. The Mississippi River system supports diverse aquatic life and provides drinking water for millions downstream. The plant plays a key role in protecting local water quality and the broader watershed ecosystem.

The plant discharges to a tributary of the Mississippi River, which flows into the Gulf of Mexico. This watershed supports diverse aquatic species and is an important migratory corridor for birds and fish. The plant's operations help maintain water quality in the local streams and contribute to the health of the larger Mississippi River ecosystem.