Edwardsville Stp, City Of
Edwardsville, IL · Madison County · Publicly Owned Treatment Works
- Average flow
- 2.3 MGD
- Design flow
- —
- NPDES permit
- ILL026310
- Effective
- Permit expires
- December 2030
- Population served
- 25,189
- CWNS 2022
Edwardsville Stp, City Of is a publicly owned wastewater treatment works in Edwardsville, Madison County, Illinois treating an average of 2.3 million gallons per day, serving about 25,189 residents. Treatment on site includes clarifiers. It discharges under NPDES permit ILL026310 (effective), which expires in December 2030, with 1 recorded violation in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
16 verified contacts for Edwardsville Stp, City Of, with validated emails and direct phone numbers.
Unlock 16 verified contacts (13 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Edwardsville Stp, City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Roxana · 1 mi away
0.21 MGD
East Alton · 7 mi away
0.51 MGD
Alton · 7 mi away
5.38 MGD
Edwardsville · 9 mi away
0.18 MGD
Collinsville · 9 mi away
2.59 MGD
Hamel · 12 mi away
0.08 MGD
Marine · 13 mi away
0.11 MGD
Godfrey · 14 mi away
0.6 MGD
Edwardsville Stp, City Of: 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 August 13, 2026.