CALIFORNIA WATER SERVICE CO. - ELA
California — Community Water System — PWSID: CA1910036
System Information
| PWSID | CA1910036 |
| System Name | CALIFORNIA WATER SERVICE CO. - ELA |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | HENRIE, TARRAH |
| Phone | 408-367-8490 |
Population & Service
| Population Served | 152,474 |
| Service Connections | 26,215 |
Drinking Water Violations (9)
This water system has 9 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, 2000 | Aug 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2000 | Total Coliform Rule |
| Apr 1, 1996 | Jul 1, 2000 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Jul 1, 2000 | Nitrate Rule |
| Apr 1, 1996 | Jul 1, 2000 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Jul 1, 2000 | Nitrate Rule |
| May 8, 1995 | Aug 24, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Aug 24, 1995 | Nitrate Rule |
| May 8, 1995 | Aug 24, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Aug 24, 1995 | Nitrate Rule |
| May 1, 1995 | May 31, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | May 31, 1995 | Nitrate Rule |
| May 1, 1995 | May 31, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | May 31, 1995 | Nitrate Rule |
| May 1, 1995 | May 31, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | May 31, 1995 | Nitrate Rule |
| May 1, 1995 | May 31, 1995 | Nitrate | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | May 31, 1995 | Nitrate 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.