East Alton Stp, Village Of
East Alton, IL · Madison County · Publicly Owned Treatment Works
- Average flow
- 0.51 MGD
- Design flow
- 2.73 MGD
- NPDES permit
- IL0023094
- Effective
- Permit expires
- August 2028
- Population served
- 7,138
- CWNS 2022
East Alton Stp, Village Of is a publicly owned wastewater treatment works in East Alton, Madison County, Illinois treating an average of 0.51 million gallons per day against a permitted design capacity of 2.73 MGD, serving about 7,138 residents. Treatment on site includes clarifiers. It discharges under NPDES permit IL0023094 (effective), which expires in August 2028, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for East Alton Stp, Village Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at East Alton Stp, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Alton · 1 mi away
5.38 MGD
Roxana · 6 mi away
0.21 MGD
Godfrey · 7 mi away
0.6 MGD
Edwardsville · 7 mi away
2.3 MGD
Edwardsville · 10 mi away
0.18 MGD
Brighton · 11 mi away
0.26 MGD
Bunker Hill · 14 mi away
0.09 MGD
Hamel · 15 mi away
0.08 MGD
East Alton Stp, Village 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 November 28, 2025.