Elmwood Stp, City Of
305 East Poplar Street, Elmwood, IL 61529 · Peoria County · Publicly Owned Treatment Works
- Average flow
- 0.43 MGD
- Design flow
- 1.18 MGD
- NPDES permit
- ILG582012
- Effective
- Permit expires
- May 2027
- Population served
- 2,121
- CWNS 2022
Elmwood Stp, City Of is a publicly owned wastewater treatment works in Elmwood, Peoria County, Illinois treating an average of 0.43 million gallons per day against a permitted design capacity of 1.18 MGD, serving about 2,121 residents. It discharges under NPDES permit ILG582012 (effective), which expires in May 2027, with 166 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Elmwood Stp, City Of.
Available with a free Klarifi account
See the full treatment train at Elmwood Stp, City Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 166
- Effluent violations
- 152
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Elmwood Stp, City Of.
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Nearby wastewater treatment plants in Illinois
Yates City · 3 mi away
0.1 MGD
Brimfield · 6 mi away
0.22 MGD
Farmington · 7 mi away
0.52 MGD
Maquon · 10 mi away
0.02 MGD
Hanna City · 10 mi away
0.02 MGD
Williamsfield · 11 mi away
0.07 MGD
Fairview · 14 mi away
0.02 MGD
Dahinda · 15 mi away
0.05 MGD
Elmwood 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 October 5, 2026; facility record last updated November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms