OHA Drinking Water Services
PWS ID: 94717 ---- COLUMBIA RIVER PUD

Alerts indicate water quality tests with analytical results greater than the detection limit or one-half of the maximum allowable contaminant level which may require some follow-up actions by Drinking Water Services. See the Contacts link for reports on follow-up actions. Alerts are not water quality violations. Violations for this water system can be found here.

Alert Type Abbreviations:  CHEM = Chemical, LCR = Lead and copper 90th percentile, LCRE = Lead and copper corrosion control, SODIUM = Sodium*
*Non-alert (water quality notice)
Results:  20 alerts found for this water system.Show response time
Water Quality Alerts
Alert ID Sample
Date
Alert
Date
Source
ID
Source Name Alert
Type
Contaminant Result Alert
Level
MCL Contact
Report
CHEM9458 08/02/2021 09/15/2021 EP-A EP for WELL SODIUM* SODIUM 55.520
CHEM8589 08/26/2019 10/09/2019 EP-A EP for WELL SODIUM* SODIUM 50.720
LCRE15978 10/01/2013 11/06/2013 EP-A EP for WELL LCRE LCR EXCURSION14>0
LCRE15907 09/01/2013 10/10/2013 EP-A EP for WELL LCRE LCR EXCURSION5>0
CHEM4908 01/20/2011 06/15/2011 SRC-AA WELL CHEM NITRATE+NITRITE (AS N) 145 10
CHEM4905 01/20/2011 06/13/2011 SRC-AA WELL CHEM NITRATE (AS N) 145 10
CHEM4299 06/16/2010 08/13/2010 EP-A EP for WELL SODIUM* SODIUM 23.620
CHEM3590 07/06/2009 07/10/2009 EP-A EP for WELL CHEM NITRATE (AS N) 145 1007/10/2009
CHEM3551 06/11/2009 06/24/2009 EP-A EP for WELL CHEM NITRATE (AS N) 125 1006/24/2009
LCRE2285 10/01/2006 11/13/2006 EP-A EP for WELL LCRE LCR EXCURSION1>0
CHEM1484 01/20/2000 03/21/2005 LCR COPPER 90TH % VALUE 2.891.35
CHEM1484 06/16/1994 03/21/2005 LCR COPPER 90TH % VALUE 2.3751.35
CHEM1484 01/20/2000 03/21/2005 LCR LEAD 90TH % VALUE 0.220.0155
CHEM1484 06/16/1994 03/21/2005 LCR LEAD 90TH % VALUE 0.0280.0155
CHEM1055 11/29/2004 12/20/2004 EP-A EP for WELL CHEM NITRATE (AS N) 205 10
CHEM1055 12/02/2004 12/20/2004 EP-A EP for WELL CHEM NITRATE (AS N) 115 10
LCRE5628 08/01/2004 09/16/2004 EP-A EP for WELL LCRE LCR EXCURSION6>0
CHEM861 08/20/2004 09/08/2004 LCR COPPER 90TH % VALUE 2.341.35
CHEM850 07/29/2004 08/23/2004 EP-A EP for WELL CHEM NITRATE (AS N) 13.65 10
CHEM765 04/29/2004 05/27/2004 EP-A EP for WELL CHEM NITRATE (AS N) 5.95 10
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
05/31/2001AA--WELLNitrate20 10
08/12/1999AA--WELLNitrate6.8 10
04/22/1999AA--WELLNitrate7.8 10
01/21/1999AA--WELLNitrate13.3 10
05/14/1998AA--WELLNitrate10 10
02/19/1998AA--WELLNitrate11.6 10
11/13/1997AA--WELLNitrate12 10
10/28/1997AA--WELLNitrate8.6 10
08/14/1997AA--WELLNitrate10.7 10
05/15/1997AA--WELLNitrate6.4 10
02/13/1997AA--WELLNitrate10 10
08/22/1996AA--WELLNitrate10 10
05/23/1996AA--WELLNitrate14 10
02/15/1996A--EP for WELLNitrate20.4 10
09/14/1995AA--WELLNitrate16.2 10
12/15/1994AA--WELLNitrate29 10
09/23/1993AA--WELL - WELLSodium52.7



For further information on this public water system, click on the area of interest below:
System Info :: Report for Lenders :: Alerts :: Violations :: Compliance & Enforcement :: Contacts & Advisories :: Site Visits :: Public Notice
Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
Chemical Group Summary :: Latest Chemical Results :: Entry Point Detects :: Single Analyte Results 
Chemical Schedule Summary :: Chemical Schedule Details
Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 1907