PWS ID: 90872 ---- NORTHWEST ALUMINUM COMPANY

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


  • Action Levels:  Lead = 0.015 mg/L;  Copper = 1.3 mg/L All detailed results
    Lead and Copper 90th Percentile Summary Results and Consumer Notices*
    Sample Dates Date Received Sample Count Duration Lead (mg/L) Copper (mg/L) Consumer
    Notice Date*
    May 20, 2020 - May 20, 2020Jun 02, 202056M 0.0000 0.0011
    Sep 18, 2019 - Sep 18, 2019Oct 01, 201953Y 0.0007 0.0040
    Sep 07, 2016 - Sep 30, 2016Oct 21, 2016103Y 0.0046 0.0071
    Sep 26, 2013 - Sep 26, 2013Oct 03, 201353Y 0.0000 0.0120
    Sep 15, 2010 - Sep 15, 2010Oct 12, 201053Y 0.0000 0.0093
    Aug 16, 2006 - Sep 27, 2006Oct 04, 200653Y 0.0000 0.0320
    Nov 26, 2002 - Jun 10, 2003Jun 16, 200353Y 0.0085 0.9250
    Jan 01, 1999 - May 27, 1999Oct 18, 199953Y 0.0008 0.0072
    Jan 01, 1996 - Jul 16, 1998Jul 30, 199853Y 0.0004 0.0230
    Jan 01, 1997 - Jun 12, 1997Aug 07, 19975YR 0.0000 0.0200
    Jan 01, 1996 - Jun 13, 1996Jul 12, 19965YR 0.0000 0.0520
    Jan 01, 1995 - Jun 14, 1995Jul 05, 19955YR 0.0040 0.0025
    Jan 01, 1994 - Apr 12, 1994May 09, 1994106M 0.0009 0.0170
    Jul 01, 1993 - Aug 04, 1993Oct 19, 1993106M 0.0000 0.0790
    *Consumer notice date is the date water customers were notified of their tap results. Consumer notice records are not available prior to 2016.



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