OHA Drinking Water Services
PWS ID: 00587 ---- ONTARIO, CITY OF
Lead & Copper Summary Results

Lead and Copper Compliance Actions
  • No lead and copper schedules found.


    • Lead and copper results shown are the 90th percentile summary results. See all detailed results.
    Consumer notice date is the date water customers were notified of their tap results. Consumer notice records are not available prior to 2016.

    Action Levels:  Lead = 0.015 mg/L;  Copper = 1.3 mg/L. Action level exceedances are indicated with bold red text.

    Sample Dates Date
    Received    		 Sample
    Count    		 Duration Lead
    (mg/L)    		 Copper
    (mg/L)    		 Consumer
    Notice Date
    Sep 07, 2021 - Sep 10, 2021 Oct 08, 2021 35 3Y 0.0000 0.2010 11/03/2021
    Jan 08, 2018 - Jan 12, 2018 Jan 26, 2018 62 6M 0.0000 0.2720 02/15/2018
    Jul 10, 2017 - Jul 31, 2017 Aug 15, 2017 60 6M 0.0022 0.1460 08/15/2017
    Aug 14, 2014 - Aug 20, 2014 30 3Y 0.0015 0.2130
    Aug 14, 2014 - Aug 20, 2014 30 3Y 0.0015 0.2130
    Aug 29, 2011 - Aug 30, 2011 Sep 29, 2011 30 3Y 0.0017 0.2000
    Aug 26, 2008 - Aug 28, 2008 Oct 02, 2008 31 3Y 0.0010 0.1500
    Jul 13, 2005 - Aug 10, 2005 Sep 08, 2005 31 3Y 0.0020 0.2030
    Sep 04, 2002 - Sep 04, 2002 Oct 17, 2002 23 3Y 0.0020 0.1500
    Jan 01, 2001 - Oct 03, 2001 Dec 11, 2001 30 YR 0.0020 0.1800
    Jan 01, 2000 - Aug 29, 2000 Sep 12, 2000 30 YR 0.0020 0.3100
    Jan 01, 1998 - Jul 24, 1998 Mar 17, 1999 30 YR 0.0020 0.1100
    Jan 01, 1996 - Sep 18, 1997 Jan 09, 1998 30 YR 0.0000 0.3400
    Jan 01, 1996 - Dec 19, 1996 Feb 21, 1997 30 YR 0.0180 0.2300
    Jan 01, 1995 - Aug 25, 1995 Feb 16, 1996 30 YR 0.0000 0.2400
    Jan 01, 1994 - Aug 30, 1994 Jan 01, 1995 30 YR 0.0000 0.2400
    Jul 01, 1993 - Jul 01, 1993 Jul 30, 1993 60 6M 0.0060 0.3400
    Jan 01, 1993 - Feb 28, 1993 Mar 29, 1993 60 6M 0.0000 0.2700


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