CWSC OAK HILLS
California — Community Water System — PWSID: CA2710019
System Information
| PWSID | CA2710019 |
| System Name | CWSC OAK HILLS |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | SAN JOSE |
| ZIP Code | 95112 |
| Address | 1720 NORTH FIRST STREET |
| Organization | JAMES, SOPHIE |
| Phone | 408-367-8593 |
Population & Service
| Population Served | 3,161 |
| Service Connections | 884 |
Drinking Water Violations (8)
This water system has 8 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, 2005 | Dec 31, 2005 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2005 | Dec 31, 2005 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Apr 10, 1996 | Jun 10, 1996 | 1,1-Dichloroethylene | MCL | Yes | No | .063 MG/L | 0.007 mg/L | .006 | Resolved | Jun 10, 1996 | Volatile Organic Chemicals |
| Apr 10, 1996 | Jun 10, 1996 | 1,1-Dichloroethylene | MCL | Yes | No | .063 MG/L | 0.007 mg/L | .006 | Resolved | Jun 10, 1996 | Volatile Organic Chemicals |
| Apr 1, 1996 | Jun 30, 1996 | 1,1-Dichloroethylene | MCL | Yes | No | .0086 MG/L | 0.007 mg/L | .006 | Resolved | Jun 30, 1996 | Volatile Organic Chemicals |
| Apr 1, 1996 | Jun 30, 1996 | 1,1-Dichloroethylene | MCL | Yes | No | .0086 MG/L | 0.007 mg/L | .006 | Resolved | Jun 30, 1996 | Volatile Organic Chemicals |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | 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.