TOWN OF DISCOVERY BAY
California — Community Water System — PWSID: CA0710009
System Information
| PWSID | CA0710009 |
| System Name | TOWN OF DISCOVERY BAY |
| 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 | Mar 20, 2026 |
Location & Contact
| State | California |
| City | DISCOVERY BAY |
| ZIP Code | 94505 |
| Address | 1800 Willow Lake Road |
| Organization | BREITSTEIN, DINA |
| Phone | 925-634-1131 |
Population & Service
| Population Served | 16,790 |
| Service Connections | 6,163 |
Drinking Water Violations (6)
This water system has 6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 1997 | Sep 30, 1997 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1997 | — | |
| Sep 1, 1997 | Sep 30, 1997 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1997 | — | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1993 | — | |
| Aug 1, 1993 | Aug 31, 1993 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1993 | — | |
| Jul 1, 1992 | Jul 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 1992 | — | |
| Jul 1, 1992 | Jul 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jul 31, 1992 | — |
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.