Matherville Stp, Village Of
Matherville, IL · Mercer County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.14 MGD
- NPDES permit
- ILG580238
- Effective
- Permit expires
- May 2027
- Population served
- 682
- CWNS 2022
Matherville Stp, Village Of is a publicly owned wastewater treatment works in Matherville, Mercer County, Illinois, serving about 682 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit ILG580238 (effective), which expires in May 2027, with 11 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
- 11
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Matherville Stp, Village Of.
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Nearby wastewater treatment plants in Illinois
Viola · 3 mi away
0.03 MGD
Reynolds · 7 mi away
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Aledo · 7 mi away
0.08 MGD
Sherrard · 7 mi away
0.05 MGD
New Windsor · 9 mi away
0.009 MGD
Aledo · 9 mi away
0.15 MGD
Milan · 11 mi away
0.03 MGD
Alpha · 12 mi away
0.005 MGD
Matherville 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 7, 2025.