1405 S 7th Ave, Saint Charles, IL 60174 · Kane County · Publicly Owned Treatment Works
St. Charles Wastewater Treatment Facility is a publicly owned wastewater treatment works in Saint Charles, Kane County, Illinois treating an average of 3.17 million gallons per day, serving about 32,709 residents. It discharges under NPDES permit ILL022705 (effective), which expires in December 2030, with 2 recorded violations in the last three years. EPA has recorded 2 formal enforcement actions naming the plant, the latest in January 2023.
3 treatment structures and unit processes identified at St. Charles Wastewater Treatment Facility.
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See the full treatment train at St. Charles Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for St. Charles Wastewater Treatment Facility in EPA's ICIS system.
Latest case · Jan 2023
City of St. Charles Pretreatment AOC
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $6,600
EPA's description of the case:
“AOC sets out measures to correct the alleged violations and bring the facility into compliance with the CWA and the facility's NPDES permit.”
Source: EPA ECHO, civil enforcement case 05-2020-0308.
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Every action against St. Charles Wastewater Treatment Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
2 verified contacts for St. Charles Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at St. Charles Wastewater Treatment Facility, plus the full compliance history and discharge data.
Saint Charles · 1 mi away
0.37 MGD
Elgin · 8 mi away
3.21 MGD
Elgin · 8 mi away
10 MGD
Bartlett · 8 mi away
1.7 MGD
Wheaton · 9 mi away
4.5 MGD
Elburn · 9 mi away
0.71 MGD
Roselle · 11 mi away
0.58 MGD
East Dundee · 13 mi away
0.81 MGD
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 21, 2026; facility record last updated May 17, 2025.