GUADALUPE VALLEY MID
California — Community Water System — PWSID: CA4110005
System Information
| PWSID | CA4110005 |
| System Name | GUADALUPE VALLEY MID |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | BRISBANE |
| ZIP Code | 94005 |
| Address | 50 PARK PLACE |
| Organization | BREAULT, RANDY |
| Phone | 415-508-2131 |
Population & Service
| Population Served | 1,472 |
| Service Connections | 749 |
Drinking Water Violations (7)
This water system has 7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 1, 2004 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 24, 2004 | Lead and Copper Rule |
| Sep 1, 1999 | Sep 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1999 | Total Coliform Rule |
| Sep 1, 1999 | Sep 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1999 | Total Coliform Rule |
| Sep 1, 1999 | Sep 30, 1999 | Coliform (TCR) | Other | No | No | — | 5% of samples | — | Resolved | Sep 30, 1999 | Total Coliform Rule |
| Sep 1, 1999 | Sep 30, 1999 | Coliform (TCR) | Other | No | No | — | 5% of samples | — | Resolved | Sep 30, 1999 | Total Coliform Rule |
| Jun 1, 1993 | Jun 30, 1993 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 5, 1992 | Surface Water Treatment Rule |
| Jun 1, 1993 | Jun 30, 1993 | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 5, 1992 | Surface Water Treatment 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.