Public water system record
St Charles
Serves St. Charles, Kane County, IL · 33,103 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for St Charles in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- St Charles draws water from 7 wells.
- Record on file since 1977, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 4,726 lead and 400 unknown out of 12,797 service lines.
Check whether St Charles serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
Full record since 1977
EPA's records for St Charles go back to 1977. Before October 19, 2016 they list 3 health-based violations (2 resolved, 1 archived by EPA without a recorded fix) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 1 |
| 1990s | 3 | 1 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 0 | 1 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 1995, Archived.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1995 | Archived |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
|
Jan 30, 1991 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
|
Jan 30, 1991 | Resolved |
Where the water comes from
St Charles draws water from 7 wells. 1 other community water system and 5 smaller public systems such as schools, businesses or campgrounds buy water from St Charles.
Community systems that buy water from it
- IL American-River Grange Godfrey, IL
Annual water quality report
St Charles must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Illinois.
Certified drinking water labs by state EPA guidance for private wells