GREAT OAKS WC INC
California — Community Water System — PWSID: CA4310022
System Information
| PWSID | CA4310022 |
| System Name | GREAT OAKS WC INC |
| 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 | SAN JOSE |
| ZIP Code | 95119 |
| Address | 20 Great Oaks Blvd. |
| Organization | ROEDER, JOHN |
| Phone | 408-227-9540 |
Population & Service
| Population Served | 110,088 |
| Service Connections | 21,415 |
Drinking Water Violations (11)
This water system has 11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mar 1, 2015 | Mar 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2015 | Total Coliform Rule |
| Mar 1, 2015 | Mar 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Mar 31, 2015 | Total Coliform Rule |
| Sep 1, 2013 | Sep 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | Total Coliform Rule |
| Sep 1, 2013 | Sep 30, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | Total Coliform Rule |
| Aug 1, 2005 | Aug 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | Total Coliform Rule |
| Aug 1, 2005 | Aug 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2005 | Total Coliform Rule |
| Jan 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 17, 2004 | Lead and Copper Rule |
| Jan 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 17, 2004 | Lead and Copper Rule |
| Sep 1, 1992 | Sep 30, 1992 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1992 | Total Coliform Rule |
| Sep 1, 1992 | Sep 30, 1992 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 1992 | Total Coliform Rule |
| — | — | — | No | No | — | — | — | — | — | — |
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.