Dry Creek Rancheria
California - Non-Transient Non-Community - PWSID: 090600127
System Information
| PWSID | 090600127 |
| System Name | Dry Creek Rancheria |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 2, 1984 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | Geyserville |
| ZIP Code | 95441 |
| Address | P.O. Box 607 |
| Organization | Dry Creek Rancheria |
| Phone | 7074314090 |
Population & Service
| Population Served | 2,200 |
| Service Connections | 3 |
Drinking Water Violations (123)
This water system has 123 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 20, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 20, 2025 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | - | 10 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Jan 1, 2021 | Mar 31, 2021 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 2021 | - | |
| Sep 1, 2019 | - | MR | No | Yes | - | - | - | Resolved | Jan 7, 2020 | - | |
| Mar 1, 2018 | Mar 31, 2018 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2018 | - | |
| Mar 1, 2018 | - | Other | No | No | - | - | - | Resolved | Nov 13, 2018 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.5 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.001 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.04 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Feb 1, 2014 | Feb 28, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2014 | - | |
| Jan 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2013 | - | |
| Aug 1, 2011 | Aug 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2011 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| May 1, 2006 | May 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2006 | - | |
| May 1, 2006 | May 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2006 | - | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2005 | - | |
| Aug 1, 2003 | Aug 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2003 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2003 | Jan 31, 2003 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2003 | - | |
| Jul 1, 2002 | - | Other | No | No | - | - | - | Resolved | Nov 4, 2005 | - | |
| Aug 1, 2001 | Aug 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2001 | - | |
| Aug 1, 2001 | Aug 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2001 | - | |
| Jul 1, 2001 | Jul 31, 2001 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2001 | - | |
| Jul 1, 2001 | - | Other | No | No | - | - | - | Resolved | Nov 4, 2005 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 2 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jul 1, 2000 | - | Other | No | No | - | - | - | Resolved | Aug 21, 2006 | - | |
| Mar 1, 2000 | Mar 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2000 | - | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Sep 1, 1997 | Sep 30, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1997 | - | |
| Jul 1, 1996 | - | MR | No | No | - | TT | - | Resolved | Feb 3, 2005 | - | |
| Feb 1, 1996 | Feb 29, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Feb 29, 1996 | - | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 1996 | - | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | - | - | Resolved | Dec 31, 1996 | - |
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.