Matherville Stp, Village Of
PO Box 585, Matherville, IL 61263 · Mercer County · Publicly Owned Treatment Works
- Average flow
- 0.05 MGD
- 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 treating an average of 0.05 million gallons per day against a permitted design capacity of 0.14 MGD, serving about 682 residents. It discharges under NPDES permit ILG580238 (effective), which expires in May 2027, with 15 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Matherville Stp, Village Of.
Available with a free Klarifi account
See the full treatment train at Matherville Stp, Village Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 15
- Effluent violations
- 15
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
0.09 MGD
Reynolds · 7 mi away
0.14 MGD
Aledo · 7 mi away
0.32 MGD
Sherrard · 7 mi away
0.15 MGD
New Windsor · 9 mi away
0.02 MGD
Aledo · 9 mi away
0.3 MGD
Milan · 11 mi away
0.05 MGD
Alpha · 12 mi away
0.21 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 October 26, 2026; facility record last updated March 7, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms