St Charles Main Stw East, Stw West
Saint Charles, IL · Kane County · Publicly Owned Treatment Works
- Average flow
- 0.37 MGD
- Design flow
- 1.75 MGD
- NPDES permit
- IL0026808
- Effective
- Permit expires
- August 2028
- Population served
- 2,290
- CWNS 2022
St Charles Main Stw East, Stw West is a publicly owned wastewater treatment plant in Saint Charles, Kane County, Illinois treating an average of 0.37 million gallons per day against a permitted design capacity of 1.75 MGD, serving about 2,290 residents. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit IL0026808 (effective), which expires in August 2028, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
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
2 verified contacts for St Charles Main Stw East, Stw West, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at St Charles Main Stw East, Stw West, plus the full compliance history and discharge data.
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St Charles Main Stw East, Stw West: 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 November 6, 2025.