OHA Drinking Water Services
PWS ID: 94713 ---- COLUMBIA RIDGE LANDFILL/RECYCL
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
    Aug 09, 2022 - Aug 09, 2022 Sep 19, 2022 5 3Y 0.0020 0.0590
    Jun 17, 2019 - Aug 20, 2019 Sep 09, 2019 5 3Y 0.0000 0.0750
    Jun 23, 2016 - Jun 23, 2016 Aug 29, 2016 5 3Y 0.0000 0.0830
    Jul 15, 2013 - Jul 15, 2013 Aug 09, 2013 5 3Y 0.0000 0.2730
    Aug 15, 2010 - Aug 15, 2010 Sep 13, 2010 5 3Y 0.0013 0.1100
    Sep 21, 2004 - Sep 21, 2004 Oct 06, 2004 5 3Y 0.0020 0.0965
    Jan 01, 2001 - Aug 05, 2001 Sep 25, 2001 5 3Y 0.0040 0.1280
    Jan 01, 1996 - Sep 16, 1998 Oct 08, 1998 5 YR 0.0014 0.0910
    Jan 01, 1997 - Sep 20, 1997 Oct 28, 1997 5 YR 0.0016 0.1400
    Jan 01, 1996 - Sep 26, 1996 Oct 09, 1996 5 YR 0.0020 0.1200
    Jan 01, 1995 - Aug 06, 1995 Aug 17, 1995 5 YR 0.0020 0.2600
    Jan 01, 1994 - Jan 16, 1994 Feb 22, 1994 5 6M 0.0015 0.5350
    Jan 01, 1993 - Jun 13, 1993 Aug 09, 1993 5 6M 0.0010 0.6250
    Oct 26, 2007 - Nov 16, 2007 5 3Y 0.0000 0.1255


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