MENDOTA, CITY OF
California — Community Water System — PWSID: CA1010021
System Information
| PWSID | CA1010021 |
| System Name | MENDOTA, 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 | Nov 17, 2025 |
Location & Contact
| State | California |
| City | MENDOTA |
| ZIP Code | 93640 |
| Address | 643 QUINCE STREET |
| Organization | GONZALEZ, CRISTIAN |
| Phone | 559-655-3291 |
Population & Service
| Population Served | 11,404 |
| Service Connections | 2,324 |
Drinking Water Violations (25)
This water system has 25 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, 2016 | Dec 31, 2016 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | Nitrate Rule |
| Jan 1, 2016 | Dec 31, 2016 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2016 | Nitrate 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 |
| May 1, 2013 | May 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2013 | Total Coliform Rule |
| May 1, 2013 | May 31, 2013 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2013 | Total Coliform Rule |
| Jan 1, 2011 | Dec 31, 2011 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2011 | Nitrate Rule |
| Jan 1, 2010 | Jan 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2010 | Total Coliform Rule |
| Jan 1, 2010 | Jan 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2010 | Total Coliform Rule |
| Jan 1, 2006 | Dec 31, 2006 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2006 | Nitrate Rule |
| Jan 1, 2006 | Dec 31, 2006 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2006 | Nitrate Rule |
| Mar 1, 2005 | Mar 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2005 | Total Coliform Rule |
| Mar 1, 2005 | Mar 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2005 | Total Coliform Rule |
| Nov 1, 2004 | Nov 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2004 | Total Coliform Rule |
| Nov 1, 2004 | Nov 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2004 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Sep 1, 2004 | Sep 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2004 | Total Coliform Rule |
| Sep 1, 2004 | Sep 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2004 | Total Coliform Rule |
| Jan 1, 2004 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 10, 2005 | Lead and Copper Rule |
| Jan 1, 2004 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 10, 2005 | Lead and Copper Rule |
| Jan 1, 2001 | Jan 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2001 | Total Coliform Rule |
| Jan 1, 2001 | Jan 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Jan 31, 2001 | Total Coliform Rule |
| Jan 1, 2000 | Dec 31, 2000 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2000 | Nitrate Rule |
| Jan 1, 2000 | Dec 31, 2000 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2000 | 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.