ST CHARLES COUNTY PWSD 2
Missouri — Community Water System — PWSID: MO6024530
System Information
| PWSID | MO6024530 |
| System Name | ST CHARLES COUNTY PWSD 2 |
| 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 | 63368-0000 |
| Address | 100 WATER DR |
| Organization | DUNN, KEVIN |
| Phone | 636-561-3737 |
Population & Service
| Population Served | 100,587 |
| Service Connections | 38,950 |
Drinking Water Violations (9)
This water system has 9 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 1, 2025 | Jun 30, 2025 | Groundwater Rule | MR | No | Yes | — | — | — | Resolved | Jun 30, 2025 | Ground Water Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Jun 1, 2021 | Jun 30, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jun 30, 2021 | Revised Total Coliform Rule |
| Dec 1, 1996 | Dec 31, 1996 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1996 | Total Coliform Rule |
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.