Is ST CHARLES required to publish a Consumer Confidence Report?

Yes. ST CHARLES is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is ST CHARLES’s next Consumer Confidence Report due?

ST CHARLES’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

ST. CHARLES, IL · Kane County

ST CHARLES Water System

Consumer Confidence Report status

ST CHARLES must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 2 items for ST CHARLES that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

ST CHARLES is one of 225 community water systems in Illinois in the 10,001 to 100,000 people size category, serving 33,103 people from groundwater.

As of August 1, 2026, its federal record holds 9 entries between 1977 and 2026, of which 2 remain open; none are health-based.

Of the 9, 5 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Radionuclides and Revised Rad Rule, the Consumer Confidence Rule, and the Total Coliform Rules.

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2026
Unaddressed
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2025
Unaddressed
Monitoring, Regular
—
Combined Radium (-226 and -228)
October 1, 2020 – December 31, 2020
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2016 – July 7, 2017
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1995 – July 31, 1995
Archived
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 30, 1991 – July 15, 1992
Resolved
Monitoring, 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
January 1, 2026	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Unaddressed
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
July 1, 1995 – July 31, 1995	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
July 1, 1995 – July 31, 1995	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
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

January 27, 2026State Public Notification requested1 linked violation
January 27, 2026State Violation/Reminder Notice1 linked violation
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 Public Notification requested2 linked violations
September 24, 1995State Violation/Reminder Notice2 linked violations
September 25, 1994State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
September 25, 1994State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
July 1, 1992State Violation/Reminder Notice1 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
June 28, 1991State Public Notification received2 linked violations
February 15, 1991State Public Notification received1 linked violation

Common questions

Is ST CHARLES required to publish a Consumer Confidence Report?: Yes. ST CHARLES is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is ST CHARLES’s next Consumer Confidence Report due?: ST CHARLES’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ST CHARLES have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 2 items for ST CHARLES that are open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

WILSON, TIMOTHY W.

630-377-4405

ST. CHARLES, IL 60174