VALENZUELA WATER SYSTEM
California - Community Water System - PWSID: CA3500527
System Information
| PWSID | CA3500527 |
| System Name | VALENZUELA WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 27, 1983 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | HOLLISTER |
| ZIP Code | 95024 |
| Address | PO Box 1070 |
| Organization | RIOS, CARMELITA |
| Phone | 831-524-8811 |
Population & Service
| Population Served | 55 |
| Service Connections | 17 |
Drinking Water Violations (117)
This water system has 117 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 1, 2025 | May 31, 2025 | MON | No | Yes | - | - | - | Archived | May 31, 2025 | - | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Jun 1, 2024 | Jun 30, 2024 | MON | No | No | - | - | - | Resolved | Jun 30, 2024 | - | |
| Mar 1, 2020 | Mar 31, 2020 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2020 | - | |
| Mar 1, 2020 | Mar 31, 2020 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2020 | - | |
| May 1, 2018 | May 31, 2018 | MCL | Yes | No | 18 MG/L | - | 10 | Archived | May 31, 2018 | - | |
| Apr 1, 2018 | Apr 30, 2018 | MCL | Yes | No | 11 MG/L | - | 10 | Archived | Apr 30, 2018 | - | |
| Jan 1, 2011 | Mar 31, 2011 | MCL | Yes | No | 56 MG/L | 10 mg/L | 45 | Resolved | Mar 31, 2011 | - | |
| Jan 1, 2011 | Mar 31, 2011 | MCL | Yes | No | 56 MG/L | 10 mg/L | 45 | Resolved | Mar 31, 2011 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Dec 31, 2010 | - | |
| Oct 1, 2010 | Dec 31, 2010 | MCL | Yes | No | 49 MG/L | 10 mg/L | 45 | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2009 | - | Other | No | No | - | - | - | Resolved | Aug 9, 2010 | - | |
| Jul 1, 2009 | - | Other | No | No | - | - | - | Resolved | Aug 9, 2010 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Nov 1, 2007 | Nov 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 61 MG/L | 10 mg/L | 45 | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2007 | Dec 31, 2007 | MCL | Yes | No | 61 MG/L | 10 mg/L | 45 | Resolved | Dec 31, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 74 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | Sep 30, 2007 | MCL | Yes | No | 74 MG/L | 10 mg/L | 45 | Resolved | Sep 30, 2007 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2009 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Feb 23, 2009 | - | |
| Nov 3, 2005 | - | MR | No | No | - | TT | - | Resolved | Nov 10, 2008 | - | |
| Nov 3, 2005 | - | MR | No | No | - | TT | - | Resolved | Nov 10, 2008 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2005 | - | |
| Jan 1, 2005 | Mar 31, 2005 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2005 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jul 1, 2004 | Sep 30, 2004 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2004 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Apr 11, 2005 | - | |
| Apr 1, 2004 | Jun 30, 2004 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2004 | - | |
| Jan 1, 2004 | Mar 31, 2004 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2004 | - | |
| Jul 1, 2002 | - | Other | No | No | - | - | - | Resolved | May 12, 2003 | - | |
| Jul 1, 2002 | - | Other | No | No | - | - | - | Resolved | May 12, 2003 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 7 MFL | - | Resolved | Oct 31, 2000 | - | |
| Oct 1, 2000 | Oct 31, 2000 | MR | No | Yes | - | 7 MFL | - | Resolved | Oct 31, 2000 | - | |
| Sep 1, 2000 | Sep 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Sep 1, 2000 | Sep 30, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2000 | - | |
| Aug 1, 2000 | Aug 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jul 1, 2000 | Jul 31, 2000 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2000 | - | |
| Jan 1, 2000 | Jan 31, 2001 | MCL | Yes | No | 49.5 MG/L | 10 mg/L | 45 | Resolved | Jan 31, 2001 | - |
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.