GONZALES, CITY OF
California — Community Water System — PWSID: CA2710007
System Information
| PWSID | CA2710007 |
| System Name | GONZALES, 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 | GONZALES |
| ZIP Code | 93926 |
| Address | PO Box 647 |
| Organization | TWISSELMANN, TIFFANY |
| Phone | 831-776-2095 |
Population & Service
| Population Served | 8,327 |
| Service Connections | 1,899 |
Drinking Water Violations (22)
This water system has 22 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 9, 2024 | — | E. COLI | MR | No | No | — | — | — | Resolved | Nov 8, 2024 | Ground Water Rule |
| Aug 9, 2024 | — | E. COLI | MR | No | No | — | — | — | Resolved | Nov 8, 2024 | Ground Water Rule |
| Aug 7, 2024 | — | E. COLI | MR | No | No | — | — | — | Resolved | Nov 8, 2024 | Ground Water Rule |
| Aug 7, 2024 | — | E. COLI | MR | No | No | — | — | — | Resolved | Nov 8, 2024 | Ground Water Rule |
| Apr 1, 2006 | Jun 30, 2006 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2006 | Nitrate Rule |
| Apr 1, 2006 | Jun 30, 2006 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2006 | Nitrate Rule |
| Jan 1, 2005 | Mar 31, 2005 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2005 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2004 | Jan 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2004 | Total Coliform Rule |
| Jan 1, 2004 | Jan 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2004 | Total Coliform Rule |
| May 1, 1999 | May 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 1999 | Total Coliform Rule |
| May 1, 1999 | May 31, 1999 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 1999 | Total Coliform Rule |
| Dec 1, 1997 | Dec 31, 1997 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1997 | Total Coliform Rule |
| Dec 1, 1997 | Dec 31, 1997 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 1997 | Total Coliform Rule |
| Aug 1, 1994 | Aug 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | Total Coliform Rule |
| Aug 1, 1994 | Aug 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Apr 30, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Apr 30, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1994 | Total Coliform Rule |
| Apr 1, 1994 | Apr 30, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 1994 | Total Coliform Rule |
| May 1, 1986 | May 31, 1986 | Nitrate | MCL | Yes | No | — | 10 mg/L | — | Archived | May 31, 1986 | Nitrate Rule |
| Oct 1, 1985 | Oct 31, 1985 | Nitrate | MCL | Yes | No | — | 10 mg/L | — | Archived | Oct 31, 1985 | Nitrate Rule |
| — | — | — | 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.