Redwood Valley Rancheria
California - Community Water System - PWSID: 090605118
System Information
| PWSID | 090605118 |
| System Name | Redwood Valley Rancheria |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Aug 2, 1994 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | Redwood Valley |
| ZIP Code | 95470 |
| Address | 3250 Road I |
| Organization | Redwood Valley Rancheria |
| Phone | 7074850361 |
Population & Service
| Population Served | 152 |
| Service Connections | 33 |
Drinking Water Violations (131)
This water system has 131 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 1, 2025 | Dec 31, 2025 | MON | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Oct 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Jul 1, 2023 | Sep 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jan 4, 2024 | - | |
| May 28, 2023 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| May 1, 2023 | May 31, 2023 | MON | No | Yes | - | - | - | Resolved | May 31, 2023 | - | |
| Apr 1, 2023 | Jun 30, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2023 | - | |
| Jul 1, 2022 | Sep 30, 2022 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2022 | - | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2017 | Jan 31, 2017 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2017 | - | |
| Sep 1, 2015 | Sep 30, 2015 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Mar 31, 2015 | - | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Mar 31, 2015 | - | |
| Jul 1, 2012 | Jul 31, 2012 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2012 | - | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2012 | - | |
| Jan 1, 2012 | Dec 31, 2012 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2012 | - | |
| Jul 1, 2011 | Jul 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2011 | - | |
| Mar 1, 2011 | Mar 31, 2011 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2011 | - | |
| Dec 1, 2010 | Dec 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Oct 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2010 | - | |
| Mar 1, 2010 | Mar 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2010 | - | |
| Sep 1, 2008 | Sep 30, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2008 | - | |
| Feb 1, 2008 | Feb 29, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Feb 29, 2008 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Feb 27, 2009 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Feb 27, 2009 | - | |
| Jul 1, 2007 | - | MR | No | No | - | TT | - | Resolved | Feb 27, 2009 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Feb 27, 2009 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Feb 27, 2009 | - | |
| Jun 1, 2005 | Jun 30, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2005 | - | |
| Jan 1, 2004 | Jan 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2004 | - | |
| Nov 1, 2003 | Nov 30, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2003 | - | |
| Feb 1, 2003 | Feb 28, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 2003 | - | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2001 | - | |
| Dec 1, 2000 | Dec 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 1998 | Oct 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1998 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1997 | - | |
| Jun 1, 1997 | Jun 30, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 1997 | - | |
| Dec 1, 1996 | Dec 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 1996 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1996 | - | |
| Jul 1, 1996 | - | MR | No | No | - | TT | - | Resolved | Feb 27, 2009 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1996 | - | |
| Mar 1, 1996 | Mar 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Mar 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.