CAL-WATER SERVICE CO.-CHICO
California — Community Water System — PWSID: CA0410002
System Information
| PWSID | CA0410002 |
| System Name | CAL-WATER SERVICE CO.-CHICO |
| 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 | Mar 20, 2026 |
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 | 114,925 |
| Service Connections | 30,396 |
Drinking Water Violations (17)
This water system has 17 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, 2002 | Sep 30, 2002 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2002 | — | |
| Sep 1, 2002 | Sep 30, 2002 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2002 | — | |
| Dec 1, 1998 | Dec 31, 1998 | MCL | Yes | No | .032 MG/L | 0.005 mg/L | .005 | Resolved | Dec 31, 1998 | — | |
| Dec 1, 1998 | Dec 31, 1998 | MCL | Yes | No | .032 MG/L | 0.005 mg/L | .005 | Resolved | Dec 31, 1998 | — | |
| Nov 1, 1992 | Dec 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1992 | — | |
| Nov 1, 1992 | Dec 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1992 | — | |
| Nov 1, 1992 | Dec 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1992 | — | |
| Oct 1, 1992 | Nov 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1992 | — | |
| Oct 1, 1992 | Nov 30, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1992 | — | |
| Sep 1, 1992 | Oct 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 1992 | — | |
| Sep 1, 1992 | Oct 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 1992 | — | |
| Sep 1, 1992 | Oct 31, 1992 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 1992 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | 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.