OFALLON PWS
Missouri — Community Water System — PWSID: MO6010588
System Information
| PWSID | MO6010588 |
| System Name | OFALLON PWS |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 7, 1980 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | Missouri |
| City | O FALLON |
| ZIP Code | 63366-0000 |
| Address | 100 N MAIN ST - CITY HALL |
| Organization | HERIGODT, JAY |
| Phone | 636-379-3801 |
Population & Service
| Population Served | 32,515 |
| Service Connections | 13,527 |
Drinking Water Violations (5)
This water system has 5 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2025 | Jun 30, 2025 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Ground Water Rule |
| Jun 1, 2025 | Jun 30, 2025 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Ground Water Rule |
| Jun 1, 2025 | Jun 30, 2025 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Ground Water Rule |
| Jun 25, 1991 | Jul 24, 1991 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 24, 1991 | Total Coliform Rule |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.