Overview
Wheaton Sanitary District STP serves approximately 49,000 residents in Wheaton, Illinois. The plant treats municipal wastewater and discharges into the DuPage River system, part of the Mississippi River basin.
The Wheaton Sanitary District STP is a municipal wastewater treatment facility located in Wheaton, Illinois, serving a population of about 49,000. The plant is situated in DuPage County, a suburban area west of Chicago, and is part of the region's infrastructure for managing wastewater from residential and commercial sources. As a facility serving a medium-sized agglomeration, the plant operates under the U.S. Clean Water Act, which requires secondary treatment as a minimum standard for municipal wastewater treatment plants. The National Pollutant Discharge Elimination System (NPDES) permit program governs its discharge, ensuring compliance with water quality standards set by the Illinois Environmental Protection Agency. The treated effluent from the plant is discharged into the DuPage River, a tributary of the Des Plaines River, which flows into the Illinois River and ultimately the Mississippi River. This watershed supports diverse aquatic life and provides recreational opportunities. The plant plays a key role in protecting downstream water quality in the greater Mississippi River basin.
Environmental context
The plant discharges into the DuPage River, which flows into the Des Plaines River, then the Illinois River, and finally the Mississippi River. This watershed is ecologically significant, supporting a variety of fish and macroinvertebrate species. The downstream environment includes important migratory corridors and habitats for waterfowl and other wildlife. Protecting water quality in this basin is critical for maintaining the ecological health of the larger Mississippi River system.
Frequently asked questions
The plant is located on Shaffner Road in Wheaton, DuPage County, Illinois, United States.
The plant serves approximately 49,000 residents in Wheaton and surrounding areas.
The plant discharges into the DuPage River, which flows into the Des Plaines River, then the Illinois River, and ultimately the Mississippi River.
The plant operates under the U.S. Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Illinois Environmental Protection Agency, which set limits on effluent quality.
Under the Clean Water Act, municipal plants of this size are required to provide at least secondary treatment, which removes about 85% of organic matter and suspended solids. Many also incorporate additional nutrient removal or disinfection.
Nearby plants