ST. CHARLES, IL · Kane County
ST CHARLES Water System
Current status
1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.
System facts
- System ID (PWSID)
- IL0894830
- System type
- Community Water System
- Population served
- 33,103
- Service connections
- 12,690
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Consumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2025
UnaddressedMonitoring, Regular
—Combined Radium (-226 and -228)
October 1, 2020 – December 31, 2020
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2016 – July 7, 2017
ResolvedMonitoring, Regular
—Nitrate
January 1, 2002 – December 31, 2002
ResolvedMaximum Contaminant Level Violation, Average
Health-basedGross Alpha, Excl. Radon and U
January 30, 1991 – November 18, 1991
ResolvedMaximum Contaminant Level Violation, Average
Health-basedCombined Radium (-226 and -228)
January 30, 1991 – July 15, 1992
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2025 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Unaddressed |
| October 1, 2020 – December 31, 2020 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Resolved |
| July 1, 2016 – July 7, 2017 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| January 1, 2002 – December 31, 2002 | Monitoring, Regular | Nitrate | — | Resolved |
| January 30, 1991 – November 18, 1991 | Maximum Contaminant Level Violation, Average | Gross Alpha, Excl. Radon and U | Health-based | Resolved |
| January 30, 1991 – July 15, 1992 | Maximum Contaminant Level Violation, Average | Combined Radium (-226 and -228) | Health-based | Resolved |
| June 30, 1977 – June 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- October 21, 2025State Violation/Reminder Notice1 linked violation
- January 21, 2021State Compliance achieved1 linked violation
- January 14, 2021State Violation/Reminder Notice1 linked violation
- July 7, 2017State Compliance achieved1 linked violation
- July 19, 2016State Violation/Reminder Notice1 linked violation
- November 24, 2003State Compliance achieved1 linked violation
- June 30, 2003State Public Notification received1 linked violation
- March 25, 2003State Public Notification requested1 linked violation
- September 24, 1995State Violation/Reminder Notice2 linked violations
- September 24, 1995State Public Notification requested2 linked violations
- September 25, 1994State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
- September 25, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
- July 1, 1992State Violation/Reminder Notice1 linked violation
- July 1, 1992State Public Notification requested1 linked violation
- February 18, 1992State Public Notification received1 linked violation
- November 18, 1991State Compliance achieved1 linked violation
- October 15, 1991State Public Notification received2 linked violations
- February 15, 1991State Public Notification received1 linked violation
Contact
WILSON, TIMOTHY W.
630-377-4405
ST. CHARLES, IL 60174