VILLA DIANN MHP
California - Community Water System - PWSID: WI6180290
System Information
| PWSID | WI6180290 |
| System Name | VILLA DIANN MHP |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 28, 1981 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | California |
| City | SAN FRANCISCO |
| ZIP Code | 94115 |
| Address | C/O HOWARD HUANG |
| Organization | ST PAUL ASSET MANAGEMENT |
| Phone | - |
Population & Service
| Population Served | 420 |
| Service Connections | 155 |
Drinking Water Violations (76)
This water system has 76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Aug 12, 2025 | - | |
| Jun 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Aug 12, 2025 | - | |
| Jun 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Aug 12, 2025 | - | |
| Jun 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Aug 12, 2025 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 11, 2022 | - | |
| Jan 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Jan 11, 2022 | - | |
| Oct 1, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 20, 2014 | - | |
| Oct 1, 2013 | - | Other | No | No | - | - | - | Resolved | Jun 20, 2014 | - | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | 6.3 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2013 | - | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | 6.3 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2013 | - | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | 6.3 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2013 | - | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | 6.3 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2013 | - | |
| Apr 1, 2013 | Jun 30, 2013 | MCL | Yes | No | 6.3 PCI/L | 5 pCi/L | 5.5 | Resolved | Jun 30, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jan 1, 2013 | Mar 31, 2013 | MCL | Yes | No | 5.8 PCI/L | 5 pCi/L | 5.5 | Resolved | Mar 31, 2013 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jul 1, 2009 | Sep 30, 2009 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2009 | - | |
| Jun 1, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| Jun 1, 2008 | - | Other | No | No | - | - | - | Resolved | Feb 22, 2011 | - | |
| May 1, 2008 | May 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2008 | - | |
| May 1, 2008 | May 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2008 | - | |
| May 1, 2008 | May 31, 2008 | MR | No | No | - | 5% of samples | - | Resolved | May 31, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 25, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 25, 2008 | - | |
| Apr 1, 2008 | Jun 30, 2008 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 25, 2008 | - | |
| Oct 1, 2003 | Oct 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2003 | - | |
| Oct 1, 2003 | Oct 31, 2003 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2003 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MCL | Yes | No | 17.7 | 15 pCi/L | 15.5 | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MCL | Yes | No | 17.7 | 15 pCi/L | 15.5 | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MCL | Yes | No | 17.7 | 15 pCi/L | 15.5 | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MCL | Yes | No | 17.7 | 15 pCi/L | 15.5 | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MCL | Yes | No | 17.7 | 15 pCi/L | 15.5 | Resolved | Dec 31, 1997 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 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.