Stookey Township WWTP
Belleville, IL · Saint Clair County · Publicly Owned Treatment Works
- Average flow
- 0.51 MGD
- Design flow
- —
- NPDES permit
- ILL025232
- Effective
- Permit expires
- December 2030
- Population served
- 17,425
- CWNS 2022
Stookey Township WWTP is a publicly owned wastewater treatment works in Belleville, Saint Clair County, Illinois treating an average of 0.51 million gallons per day, serving about 17,425 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit ILL025232 (effective), which expires in December 2030, with 13 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 12
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Stookey Township WWTP.
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Nearby wastewater treatment plants in Illinois
Swansea · 4 mi away
1 MGD
Belleville · 5 mi away
3 MGD
Millstadt · 6 mi away
0.35 MGD
O Fallon · 7 mi away
1.75 MGD
O Fallon · 7 mi away
0.38 MGD
Belleville · 7 mi away
0.71 MGD
Dupo · 9 mi away
0.29 MGD
Collinsville · 9 mi away
2.59 MGD
Stookey Township WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated May 18, 2025.