SAN ANTONIO WATER COMPANY
California — Community Water System — PWSID: CA3610085
System Information
| PWSID | CA3610085 |
| System Name | SAN ANTONIO WATER COMPANY |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | UPLAND |
| ZIP Code | 91786 |
| Address | 139 North Euclid Avenue |
| Organization | LEE, BRIAN |
| Phone | 909-982-4107 |
Population & Service
| Population Served | 3,111 |
| Service Connections | 1,219 |
Drinking Water Violations (3)
This water system has 3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2015 | Nov 30, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2015 | Total Coliform Rule |
| Feb 1, 2004 | Feb 29, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2004 | Total Coliform Rule |
| Feb 1, 2004 | Feb 29, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Feb 29, 2004 | 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.