OHA Drinking Water Services
PWS ID: 94717 ---- COLUMBIA RIVER PUD
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
IOC ARCHIVE 09/23/1993 03/03/1994 AA SODIUM 52.7 20 MG/L 17926 Alert Chem IOC0 1994-03-03
LCR CHEM1484 06/16/1994 03/21/2005 DIST-A LEAD 90TH % VALUE 0.028 0.0155 MG/L Alert Chem LCR0 2005-03-21
LCR CHEM1484 06/16/1994 03/21/2005 DIST-A COPPER 90TH % VALUE 2.375 1.35 MG/L Alert Chem LCR0 2005-03-21
NO3 ARCHIVE 12/15/1994 07/10/1995 AA NITRATE (AS N) 29 5 10 MG/L 22310 Alert Chem NO30 1995-07-10
NO3 ARCHIVE 09/14/1995 09/28/1995 AA NITRATE (AS N) 16.2 5 10 MG/L 210290 Alert Chem NO30 1995-09-28
NO3 ARCHIVE 02/15/1996 03/04/1996 A NITRATE (AS N) 20.4 5 10 MG/L 218339 Alert Chem NO30 1996-03-04
NO3 ARCHIVE 05/23/1996 08/13/1996 AA NITRATE (AS N) 14 5 10 MG/L 223611 Alert Chem NO30 1996-08-13
NO3 ARCHIVE 08/22/1996 09/03/1996 AA NITRATE (AS N) 10 5 10 MG/L 227902 Alert Chem NO30 1996-09-03
NO3 ARCHIVE 02/13/1997 02/24/1997 AA NITRATE (AS N) 10 5 10 MG/L 235770 Alert Chem NO30 1997-02-24
NO3 ARCHIVE 05/15/1997 05/22/1997 AA NITRATE (AS N) 6.4 5 10 MG/L 239810 Alert Chem NO30 1997-05-22
NO3 ARCHIVE 08/14/1997 09/02/1997 AA NITRATE (AS N) 10.7 5 10 MG/L 243967 Alert Chem NO30 1997-09-02
NO3 ARCHIVE 10/28/1997 11/03/1999 AA NITRATE (AS N) 8.6 5 10 MG/L 282893 Alert Chem NO30 1999-11-03
NO3 ARCHIVE 11/13/1997 11/19/1997 AA NITRATE (AS N) 12 5 10 MG/L 248288 Alert Chem NO30 1997-11-19
NO3 ARCHIVE 02/19/1998 02/25/1998 AA NITRATE (AS N) 11.6 5 10 MG/L 252589 Alert Chem NO30 1998-02-25
NO3 ARCHIVE 05/14/1998 05/26/1998 AA NITRATE (AS N) 10 5 10 MG/L 256412 Alert Chem NO30 1998-05-26
NO3 ARCHIVE 01/21/1999 01/29/1999 AA NITRATE (AS N) 13.3 5 10 MG/L 268543 Alert Chem NO30 1999-01-29
NO3 ARCHIVE 04/22/1999 05/05/1999 AA NITRATE (AS N) 7.8 5 10 MG/L 272907 Alert Chem NO30 1999-05-05
NO3 ARCHIVE 08/12/1999 08/19/1999 AA NITRATE (AS N) 6.8 5 10 MG/L 278648 Alert Chem NO30 1999-08-19
LCR CHEM1484 01/20/2000 03/21/2005 DIST-A LEAD 90TH % VALUE 0.22 0.0155 MG/L Alert Chem LCR0 2005-03-21
LCR CHEM1484 01/20/2000 03/21/2005 DIST-A COPPER 90TH % VALUE 2.89 1.35 MG/L Alert Chem LCR0 2005-03-21
NO3 ARCHIVE 05/31/2001 07/17/2001 AA NITRATE (AS N) 20 5 10 MG/L 01151114 Alert Chem NO30 2001-07-17
NO3 CHEM765 04/29/2004 05/27/2004 EP-A NITRATE (AS N) 5.9 5 10 MG/L 367187-I Alert Chem NO30 2004-05-27
NO3 CHEM850 07/29/2004 08/23/2004 EP-A NITRATE (AS N) 13.6 5 10 MG/L 372526-I Alert Chem CMCL NO30 2004-08-23
LCRE LCRE5628 08/01/2004 09/16/2004 EP-A LCR EXCURSION 6 >0 Alert Chem LCRE0 2004-09-16
LCR CHEM861 08/20/2004 09/08/2004 DIST-A COPPER 90TH % VALUE 2.34 1.35 MG/L Alert Chem LCR0 2004-09-08
NO3 CHEM1055 11/29/2004 12/20/2004 EP-A NITRATE (AS N) 20 5 10 MG/L 379104-I Alert Chem CMCL NO30 2004-12-20
NO3 CHEM1055 12/02/2004 12/20/2004 EP-A NITRATE (AS N) 11 5 10 MG/L 04337/19-I Alert Chem CMCL NO30 2004-12-20
LCRE LCRE2285 10/01/2006 11/13/2006 EP-A LCR EXCURSION 1 >0 Alert Chem LCRE0 2006-11-13
NO3 CHEM3551 06/11/2009 06/24/2009 06/24/2009 0 EP-A NITRATE (AS N) 12 5 10 MG/L 468242N-I Alert Chem CMCL NO30 2009-06-24
NO3 CHEM3590 07/06/2009 07/10/2009 07/10/2009 0 EP-A NITRATE (AS N) 14 5 10 MG/L 0918708-I Alert Chem CMCL NO30 2009-07-10
Notice - Sodium CHEM4299 06/16/2010 08/13/2010 EP-A SODIUM 23.6 20 MG/L 1016713-I Notice Sodium 2010-08-13
NO3 CHEM4905 01/20/2011 06/13/2011 SRC-AA NITRATE (AS N) 14 5 10 MG/L 102001001-I Alert Chem CMCL NO30 2011-06-13
NIT CHEM4908 01/20/2011 06/15/2011 SRC-AA NITRATE+NITRITE (AS N) 14 10 10 MG/L 102001001-I Alert Chem CMCL NIT0 2011-06-15
LCRE LCRE15907 09/01/2013 10/10/2013 EP-A LCR EXCURSION 5 >0 Alert Chem LCRE0 2013-10-10
LCRE LCRE15978 10/01/2013 11/06/2013 EP-A LCR EXCURSION 14 >0 Alert Chem LCRE0 2013-11-06
Notice - Sodium CHEM8589 08/26/2019 10/09/2019 EP-A SODIUM 50.7 20 MG/L 923802301-I Notice Sodium 2019-10-09
Notice - Sodium CHEM9458 08/02/2021 09/15/2021 EP-A SODIUM 55.5 20 MG/L 121402401-I Notice Sodium 2021-09-15



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