VILLA DIANN MHP

California - Community Water System - PWSID: WI6180290

System Information

PWSIDWI6180290
System NameVILLA DIANN MHP
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region05
Serves SchoolNo
WholesalerNo
First ReportedJan 28, 1981
Last ReportedMar 2, 2026

Location & Contact

StateCalifornia
CitySAN FRANCISCO
ZIP Code94115
AddressC/O HOWARD HUANG
OrganizationST PAUL ASSET MANAGEMENT
Phone-

Population & Service

Population Served420
Service Connections155

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.

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