WINDSOR, TOWN OF
California — Community Water System — PWSID: CA4910017
System Information
| PWSID | CA4910017 |
| System Name | WINDSOR, TOWN OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | WINDSOR |
| ZIP Code | 95492 |
| Address | P.O. Box 100 |
| Organization | CAVE, MICHAEL |
| Phone | 707-838-5309 |
Population & Service
| Population Served | 25,561 |
| Service Connections | 9,066 |
Drinking Water Violations (4)
This water system has 4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2008 | Dec 31, 2008 | Other | No | No | — | — | — | Resolved | Dec 31, 2008 | Miscellaneous Other Rules | |
| Jan 1, 2008 | Dec 31, 2008 | Other | No | No | — | — | — | Resolved | Dec 31, 2008 | Miscellaneous Other Rules | |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | Total Coliform Rule |
| Aug 1, 2001 | Aug 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2001 | 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.