OHA Drinking Water Services
PWS ID: 00229 ---- RIDGEWOOD DIST IMPROV CO
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
    Jun 01, 2021 - Jun 01, 2021 Jun 14, 2021 5 3Y 0.0022 0.1220 07/23/2021
    Jun 12, 2018 - Jun 12, 2018 Jun 25, 2018 5 3Y 0.0010 0.1090 07/18/2018
    Jun 01, 2015 - Jun 02, 2015 Jun 22, 2015 5 3Y 0.0020 0.1510
    Jun 01, 2012 - Jun 01, 2012 Jun 13, 2012 5 3Y 0.0000 0.1500
    Jun 01, 2009 - Jun 01, 2009 Jun 09, 2009 5 3Y 0.0000 0.1600
    Jun 01, 2006 - Jun 01, 2006 Jun 08, 2006 5 3Y 0.0000 0.1400
    Jun 02, 2003 - Jun 02, 2003 Jun 16, 2003 5 3Y 0.0030 0.1500
    Jan 01, 1999 - Jun 12, 2000 Jun 27, 2000 5 3Y 0.0030 0.2000
    Jan 01, 1997 - Sep 05, 1997 Oct 27, 1997 5 YR 0.0027 0.1100
    Jan 01, 1996 - Jun 11, 1996 Aug 05, 1996 5 YR 0.0000 0.5400
    Jan 01, 1995 - Sep 09, 1995 Dec 15, 1995 5 YR 0.0045 0.1115
    Jan 01, 1994 - Mar 22, 1994 Apr 18, 1994 10 6M 0.0020 0.2300
    Jul 01, 1993 - Aug 24, 1993 Oct 14, 1993 10 6M 0.0029 0.1400


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