OHA Drinking Water Services
PWS ID: 00878 ---- TIGARD, CITY OF
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
013401203-I 05/13/2020 08/31/2020 NITRATE EP FOR WELL #2 EP-DND
012701301-I 05/06/2020 08/31/2020 NITRATE EP FOR ASR WELL 1 EP-C1.68
012701601-I 05/06/2020 08/31/2020 NITRATE EP FOR ASR WELL 2 EP-H0.604
006202002-I 03/02/2020 03/09/2020 NITRATE EP FOR WELL #2 EP-D0.171
006202001-I 03/02/2020 03/09/2020 NITRATE EP FOR ASR WELL 2 EP-H0.386
003600401-I 02/05/2020 02/21/2020 NITRATE EP FOR ASR WELL 1 EP-C2.1
913301201-I 05/13/2019 05/31/2019 NITRATE EP FOR ASR WELL 2 EP-H0.282
912601101-I 05/06/2019 05/31/2019 NITRATE EP FOR ASR WELL 1 EP-C2.05
912601102-I 05/06/2019 05/31/2019 NITRATE EP FOR WELL #2 EP-DND
815700701-I 06/06/2018 07/18/2018 NITRATE EP FOR WELL #2 EP-DND
815700801-I 06/06/2018 07/18/2018 NITRATE EP FOR ASR WELL 2 EP-H0.441
809200701-I 04/02/2018 04/26/2018 NITRATE EP FOR ASR WELL 1 EP-C2.4
717800301-I 06/27/2017 11/21/2017 NITRATE EP FOR ASR WELL 1 EP-C3.4
717800401-I 06/27/2017 11/21/2017 NITRATE EP FOR ASR WELL 2 EP-H1
712400901-I 05/04/2017 05/17/2017 NITRATE EP FOR ASR WELL 1 EP-C1.63
712400903-I 05/04/2017 05/17/2017 NITRATE EP FOR WELL #2 EP-DND
712400902-I 05/04/2017 05/17/2017 NITRATE EP FOR ASR WELL 2 EP-H0.482
615302101-I 06/01/2016 06/23/2016 NITRATE EP FOR ASR WELL 2 EP-HND
612601201-I 05/05/2016 06/23/2016 NITRATE EP FOR WELL #2 EP-D0.377
610901401-I 04/18/2016 06/23/2016 NITRATE EP FOR ASR WELL 1 EP-CND
514100801-I 05/21/2015 06/09/2015 NITRATE EP FOR ASR WELL 1 EP-C0.9
514100803-I 05/21/2015 06/09/2015 NITRATE EP FOR WELL #2 EP-D0.6
514100802-I 05/21/2015 06/09/2015 NITRATE EP FOR ASR WELL 2 EP-H0.8
415502001-I 06/04/2014 06/23/2014 NITRATE EP FOR ASR WELL 2 EP-H0.553
413501701-I 05/15/2014 06/23/2014 NITRATE EP FOR ASR WELL 1 EP-C1.15
413200601-I 05/12/2014 06/23/2014 NITRATE EP FOR WELL #2 EP-DND
322602101-I 08/14/2013 09/03/2013 NITRATE EP FOR WELL #2 EP-D1
312601101-I 05/06/2013 05/10/2013 NITRATE EP FOR ASR WELL 1 EP-C1.8
312601001-I 05/06/2013 05/10/2013 NITRATE EP FOR ASR WELL 2 EP-H0.8
312201201-I 05/02/2013 05/10/2013 NITRATE EP FOR WELL #2 EP-D0.5
222100701 08/08/2012 08/13/2013 NITRATE EP FOR ASR WELL 1 EP-C0.9
221501001-I 08/02/2012 08/08/2012 NITRATE EP FOR ASR WELL 1 EP-C2.7
214300402-I 05/22/2012 08/08/2012 NITRATE EP FOR ASR WELL 2 EP-H0.6
213101101-I 05/10/2012 08/08/2012 NITRATE EP FOR WELL #2 EP-DND
114400601-I 05/24/2011 09/08/2011 NITRATE EP FOR ASR WELL 2 EP-H1.4
113100102-I 05/11/2011 09/08/2011 NITRATE EP FOR ASR WELL 1 EP-C1.2
112501701-I 05/05/2011 09/08/2011 NITRATE EP FOR WELL #2 EP-D0.6
1018106-I 06/30/2010 09/22/2010 NITRATE EP FOR ASR WELL 2 EP-H1.6
1016047-I 06/09/2010 09/22/2010 NITRATE EP FOR ASR WELL 1 EP-CND
1013306-I 05/13/2010 09/22/2010 NITRATE EP FOR WELL #2 EP-D0.5
466160N-I 05/12/2009 01/06/2010 NITRATE EP FOR WELL #2 EP-D0.6
466337N-I 05/12/2009 01/06/2010 NITRATE EP FOR ASR WELL 2 EP-H0.6
461138N-I 02/09/2009 01/06/2010 NITRATE EP FOR ASR WELL 1 EP-C1.5
0812830-I 05/07/2008 12/19/2008 NITRATE EP FOR ASR WELL 2 EP-H0.9
0812724-I 05/06/2008 12/19/2008 NITRATE EP FOR ASR WELL 1 EP-C2.5
0805103-I 02/20/2008 12/19/2008 NITRATE EP FOR WELL #2 EP-D0.6
0715007-I 05/30/2007 01/07/2008 NITRATE EP FOR ASR WELL 2 EP-H0.7
0714111 05/21/2007 01/07/2008 NITRATE EP FOR WELL #2 EP-D0.5
0710636-I 04/16/2007 01/07/2008 NITRATE EP FOR ASR WELL 1 EP-C0.8
408106N 05/11/2006 05/24/2006 NITRATE EP FOR ASR WELL 1 EP-CND
0612935 05/09/2006 05/24/2006 NITRATE EP FOR WELL #2 EP-D0.6
0612101 05/01/2006 12/07/2006 NITRATE EP FOR ASR WELL 2 EP-HND
0610002 04/10/2006 12/07/2006 NITRATE EP FOR ASR WELL 2 EP-HND
06061/10 03/02/2006 08/01/2006 NITRATE EP FOR WELL #2 EP-DND
06061010-I 03/02/2006 08/02/2006 NITRATE EP FOR ASR WELL 2 EP-HND
06061/10 03/02/2006 12/07/2006 NITRATE EP FOR ASR WELL 2 EP-HND
0605401-I 02/22/2006 12/07/2006 NITRATE EP FOR ASR WELL 2 EP-HND
0605402 02/22/2006 12/07/2006 NITRATE EP FOR ASR WELL 2 EP-H0.5
05143/15 05/23/2005 06/15/2005 NITRATE EP FOR ASR WELL 1 EP-C0.6
05143/16 05/23/2005 06/15/2005 NITRATE EP FOR WELL #2 EP-D0.6
369923-I 06/10/2004 01/25/2005 NITRATE EP FOR ASR WELL 1 EP-C1.2
369922-I 06/10/2004 01/25/2005 NITRATE EP FOR WELL #2 EP-D1.5
03190/53 07/09/2003 07/21/2003 NITRATE EP FOR WELL #2 EP-D0.7
03188/03 07/07/2003 07/21/2003 NITRATE EP FOR ASR WELL 1 EP-C0.8
329095 05/15/2002 06/07/2002 NITRATE EP FOR ASR WELL 1 EP-CND
329096 05/15/2002 06/07/2002 NITRATE EP FOR WELL #2 EP-DND
 

Archived Nitrate Samples
Sample ID Sample
Date
Date
Received
Analyte Name Source Name Source
ID
Result
0124709 09/04/2001 12/31/2001 Nitrate EP FOR ASR WELL #1 C1.2
0124710 09/04/2001 12/31/2001 Nitrate EP FOR WELL #2 DND
311282 05/29/2001 06/07/2001 Nitrate WELL #1 (1-2%) CA0.6
311283 05/29/2001 06/07/2001 Nitrate WELL #2 (1/2%) DAND
00182/10 06/29/2000 07/07/2000 Nitrate WELL #1 (1-2%) CA1.3
00182/11 06/29/2000 07/07/2000 Nitrate WELL #2 (1/2%) DA0.5
251/03 09/08/1999 12/17/1999 Nitrate WELL #1 (1-2%) CA1.5
251/04 09/08/1999 12/17/1999 Nitrate WELL #2 (1/2%) DAND
225/13 08/13/1999 08/16/1999 Nitrate WELL #3 EAND
175/06 06/24/1999 07/06/1999 Nitrate WELL #1 (1-2%) CAND
139/09 05/19/1999 07/06/1999 Nitrate WELL #2 (1/2%) DAND
258749 07/01/1998 07/20/1998 Nitrate WELL #1 (1-2%) CA0.5
258750 07/01/1998 07/20/1998 Nitrate WELL #2 (1/2%) DAND
157/22 06/06/1997 07/15/1997 Nitrate WELL #2 (1/2%) DAND
156/07 06/05/1997 06/30/1997 Nitrate WELL #1 (1-2%) CA0.64
26966 07/10/1996 08/17/1996 Nitrate WELL #3 EAND
25947-1 02/12/1996 03/14/1996 Nitrate WELL #1 (1-2%) CA1
25947-2 02/12/1996 03/14/1996 Nitrate WELL #2 (1/2%) DA0.25
24386 07/27/1995 11/28/1995 Nitrate WELL #1 (1-2%) CA2
24094 06/26/1995 11/28/1995 Nitrate WELL #2 (1/2%) DA2.2
20773 07/14/1994 08/30/1994 Nitrate WELL #1 (1-2%) CA1.6
20641 06/30/1994 08/30/1994 Nitrate WELL #2 (1/2%) DA1.5
17146-1 07/14/1993 10/21/1993 Nitrate WELL #1 - WELL #1 (1/2%) CA1
17146-2 07/14/1993 10/21/1993 Nitrate WELL #2 - WELL #2 (1/2%) DAND
-1938721 08/26/1992 03/17/1993 Nitrate EP FOR ASR WELL #1 C1.2
-1938663 08/26/1992 03/17/1993 Nitrate EP FOR WELL #2 D0.39
-1938722 08/01/1989 08/24/1989 Nitrate EP FOR ASR WELL #1 C0.61
-1938664 08/01/1989 08/24/1989 Nitrate EP FOR WELL #2 D0.36
-1938763 08/25/1986 08/25/1986 Nitrate EP FOR LAKE OSWEGO WTP A1.1
-1938762 08/25/1986 09/08/1986 Nitrate EP FOR LAKE OSWEGO WTP A1.1
 




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