OHA Drinking Water Services
PWS ID: 94941 ---- TUALATIN VALLEY REGIONAL TRNG CTR
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
3321021-01-I 11/17/2023 11/22/2023 NITRATE EP FOR WELL #3 EP-AND
207701901-I 03/18/2022 03/31/2022 NITRATE EP FOR WELL #3 EP-AND
110403601-I 04/14/2021 04/20/2021 NITRATE EP FOR WELL #3 EP-AND
035106601-I 12/16/2020 12/24/2020 NITRATE EP FOR WELL #3 EP-AND
902501801-I 01/25/2019 01/30/2019 NITRATE EP FOR WELL #3 EP-A4.5
802602501-I 01/26/2018 01/31/2018 NITRATE EP FOR WELL #3 EP-AND
703402401-I 02/03/2017 02/07/2017 NITRATE EP FOR WELL #3 EP-A1.9
601501901-I 01/15/2016 01/19/2016 NITRATE EP FOR WELL #3 EP-A0.5
504400901-I 02/13/2015 02/17/2015 NITRATE EP FOR WELL #3 EP-AND
414301301-I 05/23/2014 05/27/2014 NITRATE EP FOR WELL #3 EP-AND
327402301-I 10/01/2013 10/07/2013 NITRATE EP FOR WELL #3 EP-A1
300201401-I 01/02/2013 01/07/2013 NITRATE EP FOR WELL #3 EP-A4.2
218501801-I 07/03/2012 07/25/2012 NITRATE EP FOR WELL #3 EP-A0.8
209401901-I 04/03/2012 04/19/2012 NITRATE EP FOR WELL #3 EP-A0.5
200301501-I 01/03/2012 01/27/2012 NITRATE EP FOR WELL #3 EP-A0.5
127702001-I 10/04/2011 10/21/2011 NITRATE EP FOR WELL #3 EP-A0.8
118600901-I 07/05/2011 07/21/2011 NITRATE EP FOR WELL #3 EP-A0.5
109501201-I 04/05/2011 05/23/2011 NITRATE EP FOR WELL #3 EP-A1
100401601-I 01/04/2011 02/23/2011 NITRATE EP FOR WELL #3 EP-A0.6
1027838-I 10/05/2010 11/05/2010 NITRATE EP FOR WELL #3 EP-A0.7
491234N-I 07/06/2010 08/04/2010 NITRATE EP FOR WELL #3 EP-A0.7
485472N-I 04/06/2010 04/28/2010 NITRATE EP FOR WELL #3 EP-A0.7
480165N-I 01/05/2010 02/01/2010 NITRATE EP FOR WELL #3 EP-A2
474863N-I 10/06/2009 10/29/2009 NITRATE EP FOR WELL #3 EP-A0.7
469477N 07/07/2009 08/13/2009 NITRATE EP FOR WELL #3 EP-A0.7
464268N-I 04/07/2009 05/06/2009 NITRATE EP FOR WELL #3 EP-A0.7
459169N-I 01/06/2009 01/27/2009 NITRATE EP FOR WELL #3 EP-A0.6
454222N-I 10/07/2008 10/23/2008 NITRATE EP FOR WELL #3 EP-A0.7
448422N-I 07/01/2008 07/29/2008 NITRATE EP FOR WELL #3 EP-A0.7
443400-I 04/01/2008 04/18/2008 NITRATE EP FOR WELL #3 EP-A0.6
439095N 01/08/2008 02/05/2008 NITRATE EP FOR WELL #3 EP-A0.7
434474-I 10/02/2007 10/24/2007 NITRATE EP FOR WELL #3 EP-A0.6
429655N 07/03/2007 07/20/2007 NITRATE EP FOR WELL #3 EP-A0.7
424710N 04/03/2007 05/02/2007 NITRATE EP FOR WELL #3 EP-A0.7
420180-I 01/02/2007 02/05/2007 NITRATE EP FOR WELL #2 EP-B0.9
415602N 10/02/2006 10/13/2006 NITRATE EP FOR WELL #3 EP-A1.4
410727N 07/05/2006 07/20/2006 NITRATE EP FOR WELL #3 EP-A0.8
405855-I 04/04/2006 04/13/2006 NITRATE EP FOR WELL #3 EP-AND
396457-I 10/04/2005 10/11/2005 NITRATE EP FOR WELL #3 EP-A1.2
391532-I 07/12/2005 07/18/2005 NITRATE EP FOR WELL #3 EP-A0.7
386785-I 04/19/2005 04/25/2005 NITRATE EP FOR WELL #3 EP-A0.5
381757-I 01/18/2005 01/25/2005 NITRATE EP FOR WELL #3 EP-AND
377349-I 10/25/2004 11/03/2004 NITRATE EP FOR WELL #3 EP-A2.5
371882-I 07/16/2004 07/26/2004 NITRATE EP FOR WELL #3 EP-A0.8
04056/13-I 02/25/2004 03/08/2004 NITRATE EP FOR WELL #3 EP-A0.6
357325 10/17/2003 10/22/2003 NITRATE EP FOR WELL #3 EP-A0.6
351452 07/07/2003 07/21/2003 NITRATE EP FOR WELL #3 EP-A1.5
346497 04/08/2003 04/21/2003 NITRATE EP FOR WELL #3 EP-AND
03056/11 02/25/2003 03/11/2003 NITRATE EP FOR WELL #3 EP-A0.7
342356 01/20/2003 01/28/2003 NITRATE EP FOR WELL #3 EP-A0.7
02354/04 12/20/2002 12/30/2002 NITRATE EP FOR WELL #3 EP-A0.6
332475 07/16/2002 07/22/2002 NITRATE EP FOR WELL #3 EP-AND
366689-I 04/20/2002 04/26/2004 NITRATE EP FOR WELL #3 EP-A0.7
326711 04/01/2002 04/08/2002 NITRATE EP FOR WELL #3 EP-A0.8
02056/07 02/25/2002 03/11/2002 NITRATE EP FOR WELL #3 EP-AND
 

Archived Nitrate Samples
Sample ID Sample
Date		 Date
Received		 Analyte Name Source Name Source
ID		 Result
314245 07/23/2001 07/30/2001 Nitrate EP FOR WELL #1 AND
0119408 07/13/2001 07/23/2001 Nitrate EP FOR WELL #1 AND
313460 07/09/2001 07/13/2001 Nitrate EP FOR WELL #1 A11
0021303 07/31/2000 08/09/2000 Nitrate EP FOR WELL #1 AND
277560 07/26/1999 08/02/1999 Nitrate EP FOR WELL #1 AND
257025 05/28/1998 06/05/1998 Nitrate EP FOR WELL #1 A0.68
26978 07/11/1996 08/08/1996 Nitrate WELL #1 AAND
25583 12/12/1995 01/05/1996 Nitrate EP FOR WELL #2 B0.6
 



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  ::  LRAAFor SDWIS: 2976
Information by county:
Inventory  ::  Surface Water Systems  ::  Water System Surveys  ::  Outstanding Performers  ::  Plan Reviews  ::  System Scores  ::  Exceedances
Alerts  ::  Violations  ::  Compliance & Enforcement  ::  Significant Deficiencies  ::  Treatment Plant Inspections  ::  Fluoride
Water Advisories  ::  Contact Reports  ::  Cyanotoxins  ::  PFAS  ::  Post-wildfire VOCs  ::  Public Notices
Inventory List for all Oregon Drinking Water Systems in Excel or printable screen format
Staff/Partner Login
Introduction  ::  Data Search Options  ::  Water System Search  ::  DWS Home
Need help? Email Drinking Water Services for assistance.