MUMMA (THOMAS) WELL
California - Transient Non-Community - PWSID: CA5700553
System Information
| PWSID | CA5700553 |
| System Name | MUMMA (THOMAS) WELL |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| 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 | DUNNIGAN |
| ZIP Code | 95937 |
| Address | CR 89 |
| Organization | _MUMMA, TOM |
| Phone | 530-724-3279 |
Population & Service
| Population Served | 219 |
| Service Connections | 3 |
Drinking Water Violations (33)
This water system has 33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2014 | - | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2014 | - | |
| Apr 1, 2009 | Apr 30, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2009 | - | |
| Mar 1, 2009 | Mar 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Mar 1, 2009 | Mar 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Mar 1, 2009 | Mar 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Mar 1, 2009 | Mar 31, 2009 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 2009 | - | |
| Jan 1, 2008 | Jan 31, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2008 | - | |
| Jan 1, 2008 | Jan 31, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2008 | - | |
| Sep 1, 2007 | Sep 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2007 | - | |
| Sep 1, 2007 | Sep 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2007 | - | |
| Sep 1, 2007 | Sep 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2007 | - | |
| Sep 1, 2007 | Sep 30, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Sep 30, 2007 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1999 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| Jan 1, 1998 | Jan 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 1998 | - | |
| - | - | - | 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.