OHA Drinking Water Services
PWS ID: 00225 ---- CORVALLIS, 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
2081811-01-I 08/17/2022 09/09/2022 NITRATE EP FOR TAYLOR WTP EP-AND
2081811-02-I 08/17/2022 09/09/2022 NITRATE EP FOR ROCK CREEK WTP EP-BND
108190801 08/18/2021 09/16/2021 NITRATE EP FOR TAYLOR WTP EP-AND
108190802 08/18/2021 09/16/2021 NITRATE EP FOR ROCK CREEK WTP EP-BND
008270201-I 08/26/2020 09/28/2020 NITRATE EP FOR TAYLOR WTP EP-AND
008270202-I 08/26/2020 09/28/2020 NITRATE EP FOR ROCK CREEK WTP EP-BND
908230101-I 08/22/2019 12/23/2019 NITRATE EP FOR TAYLOR WTP EP-AND
908230102-I 08/22/2019 12/23/2019 NITRATE EP FOR ROCK CREEK WTP EP-BND
808160501-I 08/15/2018 08/31/2018 NITRATE EP FOR TAYLOR WTP EP-AND
808160502-I 08/15/2018 08/31/2018 NITRATE EP FOR ROCK CREEK WTP EP-BND
708172201-I 08/16/2017 09/11/2017 NITRATE EP FOR TAYLOR WTP EP-AND
708172202-I 08/16/2017 09/11/2017 NITRATE EP FOR ROCK CREEK WTP EP-B0.13
608100901-I 08/09/2016 08/29/2016 NITRATE EP FOR TAYLOR WTP EP-AND
608100902-I 08/09/2016 08/29/2016 NITRATE EP FOR ROCK CREEK WTP EP-B0.1
508130801-I 08/12/2015 09/08/2015 NITRATE EP FOR TAYLOR WTP EP-AND
508130802-I 08/12/2015 09/08/2015 NITRATE EP FOR ROCK CREEK WTP EP-BND
408071301-I 08/06/2014 08/13/2014 NITRATE EP FOR TAYLOR WTP EP-AND
408071302-I 08/06/2014 08/13/2014 NITRATE EP FOR ROCK CREEK WTP EP-B0.12
303081002-I 03/07/2013 03/15/2013 NITRATE EP FOR TAYLOR WTP EP-A0.18
303081001-I 03/07/2013 03/15/2013 NITRATE EP FOR ROCK CREEK WTP EP-BND
202160502-I 02/15/2012 03/20/2012 NITRATE EP FOR TAYLOR WTP EP-A0.4
202160501-I 02/15/2012 03/20/2012 NITRATE EP FOR ROCK CREEK WTP EP-BND
105121701-I 05/11/2011 07/06/2011 NITRATE EP FOR TAYLOR WTP EP-A0.2
105110901-I 05/10/2011 07/06/2011 NITRATE EP FOR ROCK CREEK WTP EP-BND
102101502-I 02/09/2011 03/11/2011 NITRATE EP FOR TAYLOR WTP EP-A0.35
102101501-I 02/09/2011 03/11/2011 NITRATE EP FOR ROCK CREEK WTP EP-BND
002170901-I 02/16/2010 03/22/2010 NITRATE EP FOR TAYLOR WTP EP-A0.41
002170902-I 02/16/2010 03/22/2010 NITRATE EP FOR ROCK CREEK WTP EP-BND
902190702-I 02/18/2009 04/02/2009 NITRATE EP FOR TAYLOR WTP EP-A0.27
902190701-I 02/18/2009 04/02/2009 NITRATE EP FOR ROCK CREEK WTP EP-BND
802140301-I 02/13/2008 03/25/2008 NITRATE EP FOR TAYLOR WTP EP-A0.4
802140302-I 02/13/2008 03/25/2008 NITRATE EP FOR ROCK CREEK WTP EP-BND
702220401 02/21/2007 03/22/2007 NITRATE EP FOR TAYLOR WTP EP-A0.32
702220402 02/21/2007 03/22/2007 NITRATE EP FOR ROCK CREEK WTP EP-BND
60518-3 05/17/2006 07/07/2006 NITRATE EP FOR TAYLOR WTP EP-A0.1
60518-2 05/17/2006 07/07/2006 NITRATE EP FOR ROCK CREEK WTP EP-BND
6021615 02/15/2006 10/16/2006 NITRATE EP FOR TAYLOR WTP EP-A0.5
6021614 02/15/2006 10/16/2006 NITRATE EP FOR ROCK CREEK WTP EP-BND
50210-29 02/09/2005 03/09/2005 NITRATE EP FOR TAYLOR WTP EP-A0.3
50210-28 02/09/2005 03/09/2005 NITRATE EP FOR ROCK CREEK WTP EP-BND
40610-18I 06/09/2004 07/19/2004 NITRATE EP FOR TAYLOR WTP EP-AND
40610-17I 06/09/2004 07/19/2004 NITRATE EP FOR ROCK CREEK WTP EP-BND
40218-20 02/18/2004 03/04/2004 NITRATE EP FOR TAYLOR WTP EP-A0.51
40218-19 02/17/2004 03/04/2004 NITRATE EP FOR ROCK CREEK WTP EP-BND
30515-17I 05/14/2003 06/13/2003 NITRATE EP FOR TAYLOR WTP EP-A0.25
30515-18I 05/14/2003 06/13/2003 NITRATE EP FOR ROCK CREEK WTP EP-BND
30213-13 02/12/2003 02/26/2003 NITRATE EP FOR TAYLOR WTP EP-A0.61
30213-12 02/12/2003 02/26/2003 NITRATE EP FOR ROCK CREEK WTP EP-BND
20822-9I 08/22/2002 09/26/2002 NITRATE EP FOR TAYLOR WTP EP-A0.12
20822-9I 08/21/2002 09/26/2002 NITRATE EP FOR ROCK CREEK WTP EP-BND
20228-14 02/27/2002 05/17/2002 NITRATE EP FOR TAYLOR WTP EP-A0.47
20228-13 02/27/2002 05/17/2002 NITRATE EP FOR ROCK CREEK WTP EP-BND
 

Archived Nitrate Samples
Sample ID Sample
Date
Date
Received
Analyte Name Source Name Source
ID
Result
105087 05/07/2001 06/04/2001 Nitrate TAYLOR WTP AND
105088 05/07/2001 06/04/2001 Nitrate ROCK CREEK WTP BND
521105 02/26/2001 03/19/2001 Nitrate TAYLOR WTP A0.3
521106 02/26/2001 03/19/2001 Nitrate ROCK CREEK WTP B0.05
20051611 05/15/2000 06/26/2000 Nitrate TAYLOR WTP AND
20051618 05/15/2000 06/26/2000 Nitrate ROCK CREEK WTP BND
90520-2 05/19/1999 06/09/1999 Nitrate TAYLOR WTP AND
90520-1 05/19/1999 06/09/1999 Nitrate ROCK CREEK WTP BND
90212-20 02/11/1999 03/08/1999 Nitrate TAYLOR WTP AND
90212-21 02/11/1999 03/08/1999 Nitrate TAYLOR WTP A0.49
80519-8 05/18/1998 07/13/1998 Nitrate TAYLOR WTP A0.1
80519-7 05/18/1998 07/13/1998 Nitrate TAYLOR WTP AND
80210-6 02/09/1998 03/02/1998 Nitrate TAYLOR WTP A0.56
80210-5 02/09/1998 03/02/1998 Nitrate ROCK CREEK WTP BND
70515-9 05/14/1997 06/06/1997 Nitrate TAYLOR WTP AND
70514-4 05/13/1997 06/06/1997 Nitrate ROCK CREEK WTP BND
70220-1 02/19/1997 03/07/1997 Nitrate TAYLOR WTP A0.32
70220-2 02/19/1997 03/07/1997 Nitrate ROCK CREEK WTP BND
60222-5 02/20/1996 03/05/1996 Nitrate TAYLOR WTP A0.49
60222-4 02/20/1996 03/05/1996 Nitrate ROCK CREEK WTP BND
51108-6 11/07/1995 11/28/1995 Nitrate TAYLOR WTP A0.15
51108-7 11/07/1995 11/28/1995 Nitrate ROCK CREEK WTP BND
50914-18 09/12/1995 10/02/1995 Nitrate TAYLOR WTP A0.18
50914-19 09/12/1995 10/02/1995 Nitrate ROCK CREEK WTP BND
98-5024 05/23/1995 07/24/1995 Nitrate TAYLOR WTP AND
95-5023 05/23/1995 07/24/1995 Nitrate ROCK CREEK WTP BND
50316-7 03/14/1995 04/19/1995 Nitrate TAYLOR WTP A0.95
50316-6 03/14/1995 04/19/1995 Nitrate ROCK CREEK WTP BND
41110-11 11/08/1994 12/05/1994 Nitrate TAYLOR WTP AND
41110-10 11/08/1994 12/02/1994 Nitrate ROCK CREEK WTP BND
40803-6 08/02/1994 09/08/1994 Nitrate TAYLOR WATER TREATMENT PLANT AND
40803-5 08/02/1994 09/08/1994 Nitrate ROCK CREEK WTP BND
40526-8 05/24/1994 07/08/1994 Nitrate TAYLOR WATER TREATMENT PLANT A0.21
40526-7 05/24/1994 07/08/1994 Nitrate ROCK CREEK WTP BND
40302-8 03/01/1994 04/18/1994 Nitrate TAYLOR WATER TREATMENT PLANT A0.43
40302-7 03/01/1994 04/18/1994 Nitrate ROCK CREEK WATER TREATMENT PLANT BND
31110-4 11/08/1993 01/14/1994 Nitrate ROCK CREEK WATER TREATMENT PLANT BND
30303-16 03/02/1993 11/29/1993 Nitrate TAYLOR WATER TREATMENT PLANT A0.53
30303-15 03/02/1993 11/29/1993 Nitrate ROCK CREEK WATER TREATMENT PLANT BND
-1985603 08/17/1992 09/25/1992 Nitrate TAYLOR WTP (FINISHED WATER) AND
-1985358 08/17/1992 09/25/1992 Nitrate ROCK CREEK WTP (FINISHED WATER BND
-1985604 08/15/1991 10/10/1991 Nitrate TAYLOR WTP (FINISHED WATER) A0.2
-1985359 08/15/1991 10/10/1991 Nitrate ROCK CREEK WTP (FINISHED WATER B0.1
-1985605 08/07/1990 10/10/1990 Nitrate TAYLOR WTP (FINISHED WATER) A0.4
-1985360 08/07/1990 10/10/1990 Nitrate ROCK CREEK WTP (FINISHED WATER B0.5
-1985606 08/07/1989 10/20/1989 Nitrate TAYLOR WTP (FINISHED WATER) A0.28
-1985361 08/07/1989 10/20/1989 Nitrate ROCK CREEK WTP (FINISHED WATER B0.13
-1985607 08/01/1988 09/30/1988 Nitrate TAYLOR WTP (FINISHED WATER) A0.05
-1985362 08/01/1988 09/30/1988 Nitrate ROCK CREEK WTP (FINISHED WATER B0.08
-1985608 08/04/1987 10/20/1987 Nitrate TAYLOR WTP (FINISHED WATER) A0.5
-1985363 08/04/1987 10/20/1987 Nitrate ROCK CREEK WTP (FINISHED WATER B0.3
-1985609 08/20/1986 12/31/1986 Nitrate TAYLOR WTP (FINISHED WATER) AND
-1985610 08/13/1985 08/13/1985 Nitrate TAYLOR WTP (FINISHED WATER) A0.2
 




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