Spring Valley STP - Municipal Wastewater Treatment in Spring Valley, Illinois

Spring Valley STP is a municipal wastewater treatment facility located in Spring Valley, Bureau County, Illinois. The plant serves a population of approximately 5,500 people, making it a small to medium-sized facility within the state's wastewater infrastructure. It is situated in the north-central region of Illinois, near the Illinois River. As a US-based plant, Spring Valley STP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Illinois Environmental Protection Agency. For plants serving around 5,500 people, secondary treatment is typically required to meet effluent standards. The facility's treatment processes and capacity details are not publicly available, but it is expected to comply with state and federal regulations. The plant's treated effluent is discharged into a local water body, likely a tributary of the Illinois River, which flows into the Mississippi River and eventually the Gulf of Mexico. The Illinois River watershed supports diverse aquatic life and is an important ecological corridor in the Midwest. Proper treatment at Spring Valley STP helps protect downstream water quality and aquatic habitats.

Spring Valley STP discharges into a local water body that drains into the Illinois River, a major tributary of the Mississippi River. The Illinois River watershed supports diverse aquatic species and is a critical migratory route for fish and birds. The plant's location in an inland agricultural region means its effluent can affect nutrient levels in downstream waters, contributing to the broader Gulf of Mexico hypoxic zone if not adequately treated.