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Upper Lake Hardisty System

California - Community Water System - PWSID: 090605025

System Information

PWSID090605025
System NameUpper Lake Hardisty System
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedJun 30, 2026

Location & Contact

StateCalifornia
CityUpper Lake
ZIP Code95485
AddressP.O. Box 516
OrganizationHabematolel Pomo of Upper Lake
Phone7072750737

Population & Service

Population Served98
Service Connections39

Drinking Water Violations (206)

This water system has 206 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
Jan 1, 2022 Mar 31, 2022 MR No Yes - 4.0 mg/L - Resolved Mar 10, 2022 -
Mar 1, 2012 Mar 31, 2012 MR No No - 5% of samples - Resolved Mar 31, 2012 -
Mar 1, 2011 Mar 31, 2011 MR No No - 5% of samples - Resolved Mar 31, 2011 -
Dec 1, 2009 Dec 31, 2009 MR No No - 5% of samples - Resolved Dec 31, 2009 -
Sep 1, 2007 Sep 30, 2007 MR No No - 5% of samples - Resolved Sep 30, 2007 -
Aug 1, 2004 Aug 31, 2004 MR No No - 5% of samples - Resolved Aug 31, 2004 -
Mar 1, 2004 Mar 31, 2004 MR No No - 5% of samples - Resolved Mar 31, 2004 -
Nov 1, 2003 Nov 30, 2003 MR No No - 5% of samples - Resolved Nov 30, 2003 -
Oct 1, 2003 Oct 31, 2003 MR No No - 5% of samples - Resolved Oct 31, 2003 -
Sep 1, 2003 Sep 30, 2003 MR No No - 5% of samples - Resolved Sep 30, 2003 -
Jul 1, 2003 Jul 31, 2003 MR No No - 5% of samples - Resolved Jul 31, 2003 -
May 1, 2003 May 31, 2003 MR No No - 5% of samples - Resolved May 31, 2003 -
Apr 1, 2003 Apr 30, 2003 MR No No - 5% of samples - Resolved Apr 30, 2003 -
Feb 1, 2003 Feb 28, 2003 MR No No - 5% of samples - Resolved Feb 28, 2003 -
Jan 1, 2003 Dec 31, 2003 MR No Yes - 10 mg/L - Resolved Dec 31, 2003 -
Jul 1, 2002 - Other No No - - - Resolved Mar 23, 2007 -
Jan 1, 2002 Dec 31, 2002 MR No Yes - 10 mg/L - Resolved Dec 31, 2002 -
Jul 1, 2001 - Other No No - - - Resolved Mar 23, 2007 -
Mar 1, 2001 Mar 31, 2001 MR No No - 5% of samples - Resolved Mar 31, 2001 -
Jan 1, 2001 Dec 31, 2001 MR No Yes - 0.05 mg/L - Resolved Dec 31, 2001 -
Aug 1, 1999 Aug 31, 1999 MR No No - 5% of samples - Resolved Aug 31, 1999 -
Jul 1, 1999 Jul 31, 1999 MR No No - 5% of samples - Resolved Jul 31, 1999 -
Jan 1, 1999 Dec 31, 1999 MR No Yes - 10 mg/L - Resolved Dec 31, 1999 -
Jan 1, 1998 Dec 31, 1998 MR No Yes - 10 mg/L - Resolved Dec 31, 1998 -
Jul 1, 1996 - MR No No - TT - Resolved Feb 4, 2005 -
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 - 0.005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 2 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.075 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.00005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.0005 mg/L - Resolved Dec 31, 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 - 0.005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 10 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.05 mg/L - Resolved Dec 31, 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 - 0.04 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.003 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.07 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.05 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.001 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.6 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.1 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.005 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 1 mg/L - Resolved Dec 31, 1996 -
Jan 1, 1996 Dec 31, 1996 MR No Yes - 0.7 mg/L - 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.

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