USFS GROVELAND RANGER STN.
California - Non-Transient Non-Community - PWSID: CA5500016
System Information
| PWSID | CA5500016 |
| System Name | USFS GROVELAND RANGER STN. |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Jun 22, 2026 |
Location & Contact
| State | California |
| City | SONORA |
| ZIP Code | 95370 |
| Address | 19777 Greenley Road |
| Organization | THOMPSON, NICOLE |
| Phone | 209-288-6229 |
Population & Service
| Population Served | 60 |
| Service Connections | 16 |
Drinking Water Violations (31)
This water system has 31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Oct 31, 2025 | MCL | Yes | No | - | - | - | Resolved | Oct 20, 2025 | - | |
| Oct 1, 2025 | Oct 31, 2025 | MCL | Yes | No | - | - | - | Resolved | Oct 20, 2025 | - | |
| Apr 1, 2025 | Apr 30, 2025 | MON | No | No | - | - | - | Resolved | Apr 30, 2025 | - | |
| Apr 1, 2025 | Apr 30, 2025 | MON | No | No | - | - | - | Resolved | Apr 30, 2025 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 4, 2019 | - | |
| Oct 1, 2018 | - | MR | No | No | - | TT | - | Resolved | Oct 4, 2019 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | Oct 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 2011 | - | |
| Oct 1, 2011 | - | MR | No | No | - | TT | - | Resolved | Jun 21, 2012 | - | |
| Oct 1, 2011 | - | MR | No | No | - | TT | - | Resolved | Jun 21, 2012 | - | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2010 | - | |
| Nov 1, 2010 | Nov 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 2010 | - | |
| 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 | - | |
| Jun 1, 2002 | Jun 30, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2002 | - | |
| Jun 1, 2002 | Jun 30, 2002 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2002 | - | |
| Aug 1, 2001 | Aug 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2001 | - | |
| Aug 1, 2001 | Aug 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2001 | - | |
| Jun 1, 1999 | Jun 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - | |
| Jun 1, 1999 | Jun 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - | |
| Jun 1, 1999 | Jun 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - | |
| Jun 1, 1999 | Jun 30, 1999 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1999 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1997 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1997 | - | |
| Feb 1, 1997 | Feb 28, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1997 | - | |
| Feb 1, 1997 | Feb 28, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1997 | - | |
| Oct 1, 1982 | Oct 31, 1982 | Other | No | No | - | - | - | Archived | Oct 31, 1982 | - | |
| - | - | - | 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.