OHA Drinking Water Services
PWS ID: 00665 ---- TUALATIN VALLEY WATER DISTRICT
Excel Spreadsheet

MCL = 0.010 mg/L; MCL exceedances are indicated with red text.
ND = Not detected at the minimum reporting level.
Arsenic Samples
Sample ID Sample
Date
Date
Received
Source Name Source
ID
Result
(mg/L)
Comments
113302201-I 05/13/2021 11/10/2021 EP FOR WELL 1 - GRABHORN ASR EP-CND
030901101-I 11/04/2020 12/23/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
026703501-I 09/23/2020 12/03/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
023903501-I 08/26/2020 12/23/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
010801201-I 04/17/2020 12/23/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
005603501-I 02/25/2020 12/23/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
002104103-I 01/21/2020 12/23/2020 EP FOR WELL 1 - GRABHORN ASR EP-CND
927402701-I 10/01/2019 12/12/2019 EP FOR WELL 1 - GRABHORN ASR EP-CND
831111301-I 11/07/2018 12/20/2018 EP FOR WELL 1 - GRABHORN ASR EP-CND
826001901-I 09/17/2018 12/12/2019 EP FOR WELL 1 - GRABHORN ASR EP-CND
816903001-I 06/18/2018 12/31/2018 EP FOR WELL 1 - GRABHORN ASR EP-CND
726101901-I 09/18/2017 12/19/2017 EP FOR WELL 1 - GRABHORN ASR EP-CND
717201401-I 06/21/2017 12/19/2017 EP FOR WELL 1 - GRABHORN ASR EP-CND
626402201-I 09/20/2016 11/01/2016 EP FOR WELL 1 - GRABHORN ASR EP-CND
615902001-I 06/07/2016 08/01/2016 EP FOR WELL 1 - GRABHORN ASR EP-CND
323202501-I 08/20/2013 10/24/2013 EP FOR WELL 1 - GRABHORN ASR EP-CND
320400501-I 07/23/2013 01/09/2014 EP FOR WELL 1 - GRABHORN ASR EP-CND
316100801-I 06/10/2013 01/09/2014 EP FOR WELL 1 - GRABHORN ASR EP-CND
42491-I 10/24/2012 01/04/2013 EP FOR WELL 1 - GRABHORN ASR EP-CND
WA20000836789-I 09/18/2012 12/27/2012 EP FOR WELL 1 - GRABHORN ASR EP-CND
32476-I 08/20/2012 01/04/2013 EP FOR WELL 1 - GRABHORN ASR EP-CND
23917-I 06/25/2012 01/04/2013 EP FOR WELL 1 - GRABHORN ASR EP-CND
29403-I 08/23/2011 12/23/2011 EP FOR WELL 1 - GRABHORN ASR EP-CND
1028506-I 10/12/2010 12/17/2010 EP FOR WELL 1 - GRABHORN ASR EP-CND
1021735-I 08/05/2010 12/17/2010 EP FOR WELL 1 - GRABHORN ASR EP-CND
PSI071901-I 09/21/2009 10/27/2009 EP FOR WELL 1 - GRABHORN ASR EP-CND
PSH083001-I 08/27/2009 10/27/2009 EP FOR WELL 1 - GRABHORN ASR EP-CND
PSG097501-I 07/29/2009 10/27/2009 EP FOR WELL 1 - GRABHORN ASR EP-CND
PSG041401-I 07/13/2009 10/27/2009 EP FOR WELL 1 - GRABHORN ASR EP-CND
PSG003501-I 07/01/2009 10/27/2009 EP FOR WELL 1 - GRABHORN ASR EP-CND
 

Archived Arsenic Samples
Sample ID Sample
Date
Date
Received
Source Name Source
ID
Result
-1955219 09/17/1978 09/17/1978 EP (PORTLAND W.B.) NORTH A0.005
 




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: 4065