Water Quality: St. Charles, IL
10 water systems • 44,438 people served
Multiple Health ViolationsWater Quality Summary
St. Charles is served by 10 public water systems with a combined service population of 44,438 people, and has 165 EPA Safe Drinking Water Act violations on record. Critically, 5 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. St. Charles's violation count is 473% above the national average for Illinois. Contaminants associated with violations include Disinfection Byproducts, Stage 2 DBP.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving St. Charles
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| ST CHARLES | IL0894830 | Groundwater | 33,103 | 3 |
| PRAIRIE PATH WATER COMPANY-LAKE HOLIDAY | IL0995200 | Groundwater | 6,601 | 3 |
| PRAIRIE PATH WATER COMPANY-FERSON CREEK | IL0895800 | Groundwater | 1,134 | 12 |
| PRAIRIE PATH WATER COMPANY-CLARENDON | IL0435300 | Groundwater | 850 | 7 |
| PRAIRIE PATH WATER COMPANY-CHERRY HILL | IL1975280 | Groundwater | 833 | 0 |
| PRAIRIE PATH WATER COMPANY-CAMELOT | IL1975200 | Groundwater | 777 | 0 |
| SILVER GLEN HOMEOWNER'S ASSOCIATION | IL0890040 | Groundwater | 595 | 4 |
| IL YOUTH CENTER ST CHARLES | IL0895930 | Groundwater | 375 | 8 |
| RECOVERY CENTERS OF AMERICA | IL0890080 | Groundwater | 130 | 125 |
| HIGHLAND SUBDIVISION | IL0895530 | Groundwater | 40 | 3 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Illinois
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.