Water Quality: O Fallon, MO
12 water systems • 142,677 people served
No Health ViolationsWater Quality Summary
O Fallon is served by 12 public water systems with a combined service population of 142,677 people, and has 66 EPA Safe Drinking Water Act violations on record. None of those violations are health-based — the records reflect missed monitoring or reporting deadlines rather than a contaminant exceeding safe levels. O Fallon's violation count is 73% above the national average for Missouri.
Water Systems Serving O Fallon
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| ST CHARLES COUNTY PWSD 2 | MO6024530 | Surface Water | 100,587 | 3 |
| OFALLON PWS | MO6010588 | Surface Water | 32,515 | 2 |
| ST CHARLES CO PWSD #2 WRIGHT CITY | MO6010874 | Groundwater | 3,550 | 11 |
| ST PAUL PWS | MO6011535 | Groundwater | 1,700 | 1 |
| ST CHARLES COUNTY PWSD 2 WARREN | MO6024629 | Groundwater | 1,192 | 0 |
| ST CHARLES CO PWSD 2 AUGUSTA | MO6024531 | Groundwater | 881 | 0 |
| ST CHARLES COUNTY PWSD 2 NORTH OAK DR | MO6021633 | Groundwater | 660 | 12 |
| ST CHARLES PWSD 2 FORISTELL | MO6010287 | Groundwater | 550 | 4 |
| ECM WATER & SEWER AUTHORITY - FLINT HILL | MO6011147 | Groundwater | 469 | 1 |
| ST CHARLES COUNTY PWSD 2 DUTZOW | MO6024628 | Groundwater | 400 | 0 |
| ST CHARLES CO PWSD 2 - SUMAC RIDGE | MO6031209 | Groundwater | 103 | 4 |
| FENNEC FOX WAY LLC | MO6036061 | Groundwater | 70 | 28 |
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 Missouri
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.