Thayer Stp, Village Of
Thayer, IL · Sangamon County · Publicly Owned Treatment Works
- Average flow
- 0.08 MGD
- Design flow
- 0.32 MGD
- NPDES permit
- IL0059374
- Effective
- Permit expires
- November 2029
- Population served
- 606
- CWNS 2022
Thayer Stp, Village Of is a publicly owned wastewater treatment works in Thayer, Sangamon County, Illinois treating an average of 0.08 million gallons per day against a permitted design capacity of 0.32 MGD, serving about 606 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0059374 (effective), which expires in November 2029, with 5 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
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Thayer 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 Thayer Stp, Village Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Virden · 2 mi away
0.03 MGD
Auburn · 4 mi away
0.41 MGD
Divernon · 6 mi away
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Girard · 7 mi away
0.06 MGD
Loami · 9 mi away
0.02 MGD
Farmersville · 10 mi away
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Pawnee · 10 mi away
0.09 MGD
Nilwood · 10 mi away
0.001 MGD
Thayer 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 March 20, 2025.