OHA Drinking Water Services
OR41
PWS ID: 00457 ---- LAKE OSWEGO MUNICIPAL WATER
Water Quality Alerts

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Alert Date Range: From to
Alert Type
 Alert ID Sample Date Alert Date Contact
Report		 Response
Time (Days)		 Location Analyte
 Result
 Current
Alert Level		 Current
MCL		 Units Sample Type Lab Sample ID SelectAtype FilterAlertDate
LCR CHEM1226 12/04/1992 03/21/2005 11/30/2007 984 DIST-A LEAD SUMMARY 0.019 0.015 MG/L Alert Chem LCR0 2005-03-21
LCR CHEM1226 02/23/1993 03/21/2005 11/30/2007 984 DIST-A LEAD SUMMARY 0.016 0.015 MG/L Alert Chem LCR0 2005-03-21
IOC ARCHIVE 08/11/1993 11/19/1993 B SODIUM 33.3 20 MG/L 17397 Alert Chem IOC0 1993-11-19
LCRE LCRE460 06/01/2000 07/13/2000 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2000-07-13
TCR ARCHIVE 08/08/2000 09/06/2000 COLIFORM (TCR) Present Present Routine 296625 Alert TCR0 2000-09-06
LCRE LCRE5167 03/01/2002 04/08/2002 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2002-04-08
LCRE LCRE5112 05/01/2002 06/05/2002 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2002-06-05
TCR COLI2752 01/04/2006 01/09/2006 DIST-A COLIFORM (TCR) Present Present Routine 401137 Alert TCR0 2006-01-09
TCR COLI2854 01/04/2006 02/09/2006 DIST-A COLIFORM (TCR) Present Present Routine 401137 Alert TCR0 2006-02-09
TCR COLI3130 06/15/2006 06/16/2006 DIST-A COLIFORM (TCR) Present Present Routine 409921 Alert TCR0 2006-06-16
TCR COLI3601 10/02/2006 10/03/2006 DIST-A COLIFORM (TCR) Present Present Routine 415597 Alert TCR0 2006-10-03
SOC CHEM2857 09/26/2007 02/21/2008 02/29/2008 8 EP-A 2,4-D 0.000632 0.07 MG/L PQI089201 Alert Chem SOC0 2008-02-21
LCRE LCRE713 10/01/2007 11/13/2007 EP-A LCR EXCURSION 2 >0 Alert Chem LCRE0 2007-11-13
LCRE LCRE8225 01/01/2008 02/06/2008 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2008-02-06
LCRE LCRE10087 06/01/2009 07/16/2009 EP-A LCR EXCURSION 2 >0 Alert Chem LCRE0 2009-07-16
LCRE LCRE10674 11/01/2009 12/07/2009 EP-A LCR EXCURSION 2 >0 Alert Chem LCRE0 2009-12-07
LCRE LCRE12196 01/01/2011 02/03/2011 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2011-02-03
LCRE LCRE12353 02/01/2011 03/09/2011 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2011-03-09
LCRE LCRE13589 01/01/2012 02/08/2012 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2012-02-08
LCRE LCRE13821 03/01/2012 04/06/2012 EP-A LCR EXCURSION 2 >0 Alert Chem LCRE0 2012-04-06
SOC CHEM5844 06/11/2013 07/16/2013 06/26/2013 -20 EP-A 2,4-D 0.00013 0.07 MG/L 201306020557-S Alert Chem SOC0 2013-07-16
LCRE LCRE15891 09/01/2013 10/08/2013 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2013-10-08
TCR COLI12850 05/27/2014 05/28/2014 05/28/2014 0 DIST-A COLIFORM (TCR) Present Present Routine 563746 Alert TCR0 2014-05-28
TCR COLI14125 05/06/2015 05/07/2015 05/07/2015 0 DIST-A COLIFORM (TCR) Present Present Routine 579419 Alert TCR0 2015-05-07
TCR COLI15032 12/08/2015 12/09/2015 DIST-A COLIFORM (TCR) Present Present Routine 589450 Alert TCR0 2015-12-09
TCR COLI15724 07/13/2016 07/14/2016 07/14/2016 0 DIST-A COLIFORM (TCR) Present Present Routine 598185 Alert TCR0 2016-07-14
TCR COLI15724 07/13/2016 07/14/2016 07/14/2016 0 DIST-A COLIFORM (TCR) Present Present Routine 598186 Alert TCR0 2016-07-14
TCR COLI15858 08/15/2016 08/16/2016 08/15/2016 -1 DIST-A COLIFORM (TCR) Present Present Routine 599161 Alert TCR0 2016-08-16
TCR COLI16346 12/05/2016 12/06/2016 12/07/2016 1 DIST-A COLIFORM (TCR) Present Present Routine 602300 Alert TCR0 2016-12-06
TCR TCR-700 08/01/2023 08/03/2023 08/03/2023 0 DIST-A COLIFORM (TCR) Present Present Routine 23-45192 Alert TCR0 2023-08-03


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