Belleville Wastewater Treatment Facility
Belleville, IL · St. Clair County · Publicly Owned Treatment Works
- Average flow
- 3 MGD
- Design flow
- —
- NPDES permit
- ILL021873
- Effective
- Permit expires
- December 2030
- Population served
- 21,449
- CWNS 2022
Belleville Wastewater Treatment Facility is a publicly owned wastewater treatment works in Belleville, St. Clair County, Illinois treating an average of 3 million gallons per day, serving about 21,449 residents. Treatment on site includes clarifiers, aerated lagoons, biogas silos. It discharges under NPDES permit ILL021873 (effective), which expires in December 2030, with 2 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
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Belleville Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Belleville Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Belleville · 2 mi away
0.71 MGD
Swansea · 2 mi away
1 MGD
Belleville · 5 mi away
0.51 MGD
Freeburg · 6 mi away
0.19 MGD
Smithton · 6 mi away
0.45 MGD
Millstadt · 7 mi away
0.35 MGD
O Fallon · 7 mi away
1.75 MGD
O Fallon · 7 mi away
0.38 MGD
Belleville Wastewater Treatment Facility: 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 17, 2025.