Clay City, Village Of
Clay City, IL · Clay County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 0.6 MGD
- NPDES permit
- IL0020974
- Effective
- Permit expires
- September 2029
- Population served
- 1,052
- CWNS 2022
Clay City, Village Of is a publicly owned wastewater treatment plant in Clay City, Clay County, Illinois treating an average of 0.27 million gallons per day against a permitted design capacity of 0.6 MGD, serving about 1,052 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0020974 (effective), which expires in September 2029, with 51 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 51
- Effluent violations
- 49
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Clay City, Village Of, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Clay City, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Noble · 7 mi away
0.02 MGD
Flora · 8 mi away
0.43 MGD
Louisville · 9 mi away
0.008 MGD
Olney · 14 mi away
0.87 MGD
Xenia · 16 mi away
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Calhoun · 17 mi away
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Parkersburg · 17 mi away
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Geff · 18 mi away
0.001 MGD
Clay City, 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 6, 2025.