Ofallon Pws
PWSID: MO6010588
System Details
| Population Served | 32,515 |
| Service Connections | 13,527 |
| Water Source | Surface Water Purchased |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | O Fallon |
| Zip Code | 63366-0000 |
Areas Served
- O Fallon, St. Charles County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0032 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0032 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0028 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0028 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0026 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0026 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0015 mg/L | 0.015 mg/L | Below Action Level |
Violation History (2 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2025-06-01 | Major | Acknowledged |
| | 2025-06-01 | Major | Returned to Compliance |