Yorkville Bristol STP - Wastewater Treatment Plant in Yorkville, Illinois

Yorkville Bristol STP is a municipal wastewater treatment facility located at 214 River Street in Yorkville, Illinois, within Kendall County. The plant serves a population of approximately 15,240 people, classifying it as a medium-sized agglomeration under typical US regulatory frameworks. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, administered by the Illinois Environmental Protection Agency. For plants serving this population range, secondary treatment is standard, with potential nutrient removal requirements depending on the receiving water body's sensitivity. The plant discharges treated effluent into the Fox River, which flows southwest to the Illinois River, then to the Mississippi River, and ultimately to the Gulf of Mexico. The Fox River watershed supports diverse aquatic life and is an important recreational and ecological corridor in northeastern Illinois.

The plant discharges into the Fox River, a tributary of the Illinois River, which drains into the Mississippi River and the Gulf of Mexico. The Fox River watershed supports diverse aquatic species and is a key migratory route for waterfowl. Downstream ecosystems include wetlands and floodplains that benefit from regulated effluent flows, though nutrient loading from upstream sources can impact water quality.