Grayville Stp, City Of
Grayville, IL · White County · Publicly Owned Treatment Works
- Average flow
- 0.2 MGD
- Design flow
- 0.68 MGD
- NPDES permit
- IL0023477
- Effective
- Permit expires
- January 2029
- Population served
- 2,042
- CWNS 2022
Grayville Stp, City Of is a publicly owned wastewater treatment works in Grayville, White County, Illinois treating an average of 0.2 million gallons per day against a permitted design capacity of 0.68 MGD, serving about 2,042 residents. It discharges under NPDES permit IL0023477 (effective), which expires in January 2029, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
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
Decision-makers at Grayville Stp, City Of.
No verified contacts on file yet
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Nearby wastewater treatment plants in Illinois
Crossville · 8 mi away
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Albion · 9 mi away
0.2 MGD
Keensburg · 10 mi away
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West Salem · 18 mi away
0.01 MGD
Mill Shoals · 20 mi away
—
Fairfield · 20 mi away
0.44 MGD
Springerton · 20 mi away
0.004 MGD
Enfield · 23 mi away
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Grayville 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 September 22, 2025.