SAN JOAQUIN, CITY OF
California - Community Water System - PWSID: CA1010034
System Information
| PWSID | CA1010034 |
| System Name | SAN JOAQUIN, CITY OF |
| 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 | SAN JOAQUIN |
| ZIP Code | 93660 |
| Address | P.O. Box 758 |
| Organization | BULLA, STAN |
| Phone | 559-693-4311 |
Population & Service
| Population Served | 4,060 |
| Service Connections | 754 |
Drinking Water Violations (39)
This water system has 39 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, 2010 | Sep 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Jun 1, 2005 | Jun 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2005 | - | |
| Jun 1, 2005 | Jun 30, 2005 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2005 | - | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2005 | - | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2005 | - | |
| Jul 1, 2004 | Jul 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2004 | - | |
| Jul 1, 2004 | Jul 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2004 | - | |
| Mar 1, 2004 | Mar 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Mar 1, 2004 | Mar 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Apr 1, 2003 | Apr 30, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2003 | - | |
| Apr 1, 2003 | Apr 30, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2003 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | Jun 4, 2004 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | Jun 4, 2004 | - | |
| Jun 1, 2001 | Jun 30, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2001 | - | |
| Jun 1, 2001 | Jun 30, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2001 | - | |
| May 1, 2000 | May 31, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2000 | - | |
| May 1, 2000 | May 31, 2000 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 2000 | - | MR | No | No | - | TT | - | Resolved | Jun 4, 2004 | - | |
| Jan 1, 2000 | - | MR | No | No | - | TT | - | Resolved | Jun 4, 2004 | - | |
| Jan 1, 2000 | - | MR | No | No | - | TT | - | Resolved | Jun 4, 2004 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1998 | - | |
| Jun 1, 1998 | Jun 30, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1998 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1994 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 1994 | - | |
| Nov 1, 1993 | Dec 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 1993 | - | |
| Nov 1, 1993 | Dec 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 1993 | - | |
| 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 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 1992 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 1992 | - | |
| Dec 1, 1989 | Dec 31, 1989 | Other | No | No | - | - | - | Archived | Dec 31, 1989 | - |
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.