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

MCL = 10 mg/L; MCL exceedances are indicated with red text.
ND = Not detected at the minimum reporting level.
Nitrate Samples
Sample ID Sample
Date
Date
Received
Analyte Name Source Name Source
ID
Result
(mg/L)
Comments
113302201-I 05/13/2021 11/10/2021 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
030901101-I 11/04/2020 12/23/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.398
026703501-I 09/23/2020 12/03/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
023903501-I 08/26/2020 12/23/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.47
010801201-I 04/17/2020 12/23/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
005603501-I 02/25/2020 12/23/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.561
002104103-I 01/21/2020 12/23/2020 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.529
927402701-I 10/01/2019 12/12/2019 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.521
831111301-I 11/07/2018 12/20/2018 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.503
826001901-I 09/17/2018 12/12/2019 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.28
816903001-I 06/18/2018 12/31/2018 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.591
726101901-I 09/18/2017 12/19/2017 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.454
717201401-I 06/21/2017 12/19/2017 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.8
626402201-I 09/20/2016 11/01/2016 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.59
615902001-I 06/07/2016 08/01/2016 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
4401228731 09/30/2015 12/14/2015 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.43
4401164031 07/29/2015 12/14/2015 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.46
4401143671 07/07/2015 12/14/2015 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.53
4401094871 05/12/2015 12/14/2015 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.72
2502119201-I 09/04/2014 12/29/2014 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.41
323202501-I 08/20/2013 10/24/2013 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
316100801-I 06/10/2013 01/09/2014 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.5
42491-I 10/24/2012 01/04/2013 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.28
WA20000836789-I 09/18/2012 12/27/2012 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.28
32476-I 08/20/2012 01/04/2013 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.33
23917-I 06/25/2012 01/04/2013 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-CND
29403-I 08/23/2011 12/23/2011 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.38
1028506-I 10/12/2010 12/17/2010 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.6
1021735-I 08/05/2010 12/17/2010 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.5
PSI071901-I 09/21/2009 10/27/2009 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.24
PSH083001-I 08/27/2009 10/27/2009 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.27
PSG097501-I 07/29/2009 10/27/2009 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.25
PSG041401-I 07/13/2009 10/27/2009 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.2
PSG003501-I 07/01/2009 10/27/2009 NITRATE EP FOR WELL 1 - GRABHORN ASR EP-C0.15
 

Archived Nitrate Samples
Sample ID Sample
Date
Date
Received
Analyte Name Source Name Source
ID
Result
-1955212 09/17/1978 09/17/1978 Nitrate EP (PORTLAND W.B.) NORTH A0.049
 




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