OHA Drinking Water Services
PWS ID: 90872 ---- NORTHWEST ALUMINUM COMPANY

Alerts indicate water quality tests with analytical results greater than the detection limit or one-half of the maximum allowable contaminant level which may require some follow-up actions by Drinking Water Services. See the Contacts link for reports on follow-up actions. Alerts are not water quality violations. Violations for this water system can be found here.

Alert Type Abbreviations:  CHEM = Chemical, COLI = Coliform, SOURCE = Coliform source sample*, SODIUM = Sodium*
*Non-alert (water quality notice)
Response Time is the number of days from the alert date to the contact report date.
Results:  111 alerts found for this water system.Hide response time
Water Quality Alerts
Alert ID Sample
Date		 Alert
Date		 Source
ID		 Source Name Alert
Type		 Contaminant Result Alert
Level		 MCL Contact
Report		Response
Time (Days)
COLI20606 11/30/2020 12/02/2020 DIST-A 3313 W 2nd HROB COLI COLIFORM, TOTAL (TCR) Present Present Present12/03/20201
COLI20588 11/24/2020 11/25/2020 DIST-A 3313 W 2nd St WRPB COLI COLIFORM, E. COLI Present Present Present11/25/20200
COLI20588 11/24/2020 11/25/2020 DIST-A 3313 W 2nd St WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present11/25/20200
COLI20347 10/01/2020 10/02/2020 DIST-A MROB COLI COLIFORM, TOTAL (TCR) Present Present Present10/06/20204
COLI20347 10/01/2020 10/02/2020 DIST-A WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present10/06/20204
COLI20347 10/01/2020 10/02/2020 DIST-A MRPB COLI COLIFORM, TOTAL (TCR) Present Present Present10/06/20204
COLI20323 09/29/2020 09/30/2020 DIST-A Women's Restroom Personnel Bld COLI COLIFORM, TOTAL (TCR) Present Present Present10/01/20201
COLI19482 10/31/2019 11/04/2019 DIST-A 3313 W 2nd St WROB COLI COLIFORM, TOTAL (TCR) Present Present Present11/05/20191
COLI19482 10/31/2019 11/04/2019 DIST-A 3313 W 2nd St MRPB COLI COLIFORM, TOTAL (TCR) Present Present Present11/05/20191
CHEM8761 10/29/2019 12/19/2019 EP-A EP FOR WELL #1 SODIUM* SODIUM 21.720
COLI19468 10/28/2019 10/29/2019 DIST-A 3313 W 2nd St WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present11/05/20197
CHEM8839 10/28/2019 02/06/2020 EP-B EP FOR WELL #3 SODIUM* SODIUM 27.420
COLI19186 08/22/2019 08/23/2019 DIST-A MRPB COLI COLIFORM, TOTAL (TCR) Present Present Present09/30/201938
COLI19186 08/22/2019 08/23/2019 DIST-A MROB COLI COLIFORM, TOTAL (TCR) Present Present Present09/30/201938
COLI19164 08/19/2019 08/20/2019 DIST-A 3313 W 2nd WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present08/21/20191
COLI19019 07/11/2019 07/12/2019 DIST-A 3313 W 2nd St MROB COLI COLIFORM, TOTAL (TCR) Present Present Present08/01/201920
COLI19003 07/08/2019 07/10/2019 DIST-A Womens Restroom Personnel Bldg COLI COLIFORM, TOTAL (TCR) Present Present Present07/10/20190
COLI19003 07/08/2019 07/10/2019 DIST-A Mens Restroom Personnel Bldg COLI COLIFORM, TOTAL (TCR) Present Present Present07/10/20190
COLI18986 07/02/2019 07/03/2019 DIST-A 3313 W 2nd Ave WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present07/08/20195
COLI18646 01/29/2019 01/31/2019 DIST-A womens rr personnel bldg COLI COLIFORM, TOTAL (TCR) Present Present Present01/30/2019-1
COLI18488 12/03/2018 12/06/2018 DIST-A 3313 W 2nd St MROB COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18488 12/03/2018 12/06/2018 DIST-A 3313 W 2nd St WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18467 11/28/2018 11/30/2018 DIST-A 3313 W. 2nd St. WRPB COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18390 11/05/2018 11/07/2018 DIST-A 3313 W. 2nd St. mrob COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18390 11/05/2018 11/07/2018 DIST-A 3313 W.2nd Ave. mrpb COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18390 11/05/2018 11/07/2018 DIST-A 3313 W. 2nd St. wrpb COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18373 10/30/2018 10/31/2018 DIST-A 3313 W 2nd St. wrpb COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18181 09/06/2018 09/10/2018 DIST-A 3313 w 2nd ave wrpb COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18181 09/06/2018 09/10/2018 DIST-A 3313 w 2nd ave mrpb COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18181 09/06/2018 09/10/2018 DIST-A 3313 w 2nd ave mrob COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18142 08/28/2018 08/29/2018 DIST-A womens restroom personnel bldg COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18142 08/28/2018 08/29/2018 DIST-A mens restroom personnel bldg COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18142 08/28/2018 08/29/2018 DIST-A mens restroom office bldg COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI18038 07/30/2018 08/01/2018 DIST-A mens restroom office bldg. COLI COLIFORM, TOTAL (TCR) Present Present Present08/01/20180
COLI18038 07/30/2018 08/01/2018 DIST-A mens restroom personnel bldg. COLI COLIFORM, TOTAL (TCR) Present Present Present08/01/20180
COLI18038 07/30/2018 08/01/2018 DIST-A womens restroom personnel bldg COLI COLIFORM, TOTAL (TCR) Present Present Present08/01/20180
COLI18015 07/23/2018 07/25/2018 DIST-A 3313 w 2nd st. wrpb COLI COLIFORM, TOTAL (TCR) Present Present Present07/24/2018-1
COLI18015 07/23/2018 07/25/2018 DIST-A 3313 w 2nd st. mrpb COLI COLIFORM, TOTAL (TCR) Present Present Present07/24/2018-1
COLI18015 07/23/2018 07/25/2018 DIST-A 3313 w 2nd st. mrob COLI COLIFORM, TOTAL (TCR) Present Present Present07/24/2018-1
COLI17862 06/07/2018 06/08/2018 DIST-A womens restroom sink COLI COLIFORM, TOTAL (TCR) Present Present Present06/11/20183
COLI15035 12/08/2015 12/09/2015 DIST-A personnel sink mens COLI COLIFORM, TOTAL (TCR) Present Present Present12/15/20156
COLI12247 10/02/2013 10/04/2013 DIST-A guard shack sink COLI COLIFORM, TOTAL (TCR) Present Present Present10/03/2013-1
COLI12178 09/23/2013 09/25/2013 DIST-A old guard shack security sink COLI COLIFORM, TOTAL (TCR) Present Present Present09/24/2013-1
COLI12178 09/23/2013 09/25/2013 SRC-AA well #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present09/24/2013-1
COLI12136 09/15/2013 09/20/2013 DIST-A old guard shack security sink COLI COLIFORM, TOTAL (TCR) Present Present Present09/20/20130
COLI9368 07/07/2011 07/11/2011 DIST-A lunch room COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI9300 06/29/2011 06/30/2011 DIST-A NWA guard house COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI8934 01/26/2011 01/27/2011 DIST-A GUARD HS 3313 W 2ND COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI8801 12/20/2010 12/22/2010 DIST-A GUARD HS 3313 W 2ND COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI8801 12/20/2010 12/22/2010 DIST-A NWAS LUNCH RM 2929 W COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI8801 12/20/2010 12/22/2010 SRC-AA WELL #1 SOURCE* COLIFORM, TOTAL (TCR) Present Present Present
COLI8766 12/14/2010 12/15/2010 DIST-A NWAS Lunchroom COLI COLIFORM, TOTAL (TCR) Present Present Present12/16/20101
COLI8758 12/13/2010 12/14/2010 DIST-A 2929 west 2nd st COLI COLIFORM, TOTAL (TCR) Present Present Present12/15/20101
CHEM4472 09/21/2010 10/25/2010 EP-A EP FOR WELL #1 SODIUM* SODIUM 22.120
CHEM4472 09/15/2010 10/25/2010 EP-B EP FOR WELL #3 SODIUM* SODIUM 34.720
CHEM4472 09/15/2010 10/25/2010 EP-C EP FOR WELL #4 SODIUM* SODIUM 22.620
COLI7364 02/17/2010 02/18/2010 DIST-A guard house nwa 3313 w 2nd COLI COLIFORM, TOTAL (TCR) Present Present Present02/22/20104
COLI7214 01/07/2010 01/08/2010 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI7203 01/05/2010 01/06/2010 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present01/06/20100
COLI7203 01/05/2010 01/06/2010 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present01/06/20100
COLI7203 01/05/2010 01/06/2010 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present01/06/20100
COLI7203 01/05/2010 01/06/2010 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present01/06/20100
COLI7194 12/29/2009 12/30/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/31/20091
COLI7116 11/18/2009 12/02/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present11/19/2009-13
COLI6976 10/19/2009 10/20/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI6943 10/13/2009 10/14/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present10/15/20091
COLI6543 08/04/2009 08/05/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present08/12/20097
COLI6523 07/29/2009 07/30/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present08/03/20094
COLI6496 07/21/2009 07/22/2009 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present07/23/20091
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/22/2008-2
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/22/2008-2
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/22/2008-2
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/22/2008-2
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/22/2008-2
COLI6000 12/22/2008 12/24/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/22/2008-2
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, E. COLI Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/18/20080
COLI5985 12/17/2008 12/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present12/18/20080
COLI5636 09/17/2008 09/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present09/22/20084
COLI5636 09/17/2008 09/18/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present09/22/20084
COLI5521 08/13/2008 08/20/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI5523 08/13/2008 08/20/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI5493 08/11/2008 08/12/2008 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present08/18/20086
COLI3931 01/15/2007 01/17/2007 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2416 09/12/2005 09/16/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2411 09/08/2005 09/13/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2401 09/06/2005 09/09/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2327 08/10/2005 08/17/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2327 08/10/2005 08/17/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2327 08/10/2005 08/17/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI2322 08/08/2005 08/17/2005 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI953 01/14/2004 01/20/2004 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI940 01/13/2004 01/15/2004 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI820 11/18/2003 11/24/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI820 11/18/2003 11/24/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI805 11/12/2003 11/17/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI725 10/20/2003 10/24/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI728 10/16/2003 10/27/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI719 10/16/2003 10/22/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI738 10/13/2003 10/29/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI702 10/06/2003 10/15/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
COLI667 09/30/2003 10/07/2003 DIST-A Distribution System COLI COLIFORM, TOTAL (TCR) Present Present Present
CHEM279 11/21/2002 01/21/2003 EP-A ENTRY POINT - WELL #1 CHEM CADMIUM 0.00320.0025 0.005
CHEM279 11/21/2002 01/21/2003 EP-C ENTRY POINT - WELL #4 SODIUM* SODIUM 2220
CHEM279 11/21/2002 01/21/2003 EP-A ENTRY POINT - WELL #1 SODIUM* SODIUM 2620
CHEM279 11/21/2002 01/21/2003 EP-B ENTRY POINT - WELL #3 SODIUM* SODIUM 3520
*Non-alert (water quality notice)


Archived Alerts (SWS database)
Date Source Chemical Results mg/l MCL mg/l
04/30/2002Coliform
01/29/2002Coliform
11/07/1997Coliform
11/05/1997Coliform
06/01/1999AA--WELL #1Sodium35
06/01/1999BA--WELL #3Sodium46
06/01/1999CA--WELL #4Sodium26
05/29/1996A--ENTRY POINT - WELL #1Sodium30.7
05/29/1996B--ENTRY POINT - WELL #3Sodium41.4
05/29/1996C--ENTRY POINT - WELL #4Sodium22.7
05/25/1993AA--WELL #1 - WELL #1Sodium26.1
05/25/1993BA--WELL #3 - WELL #3Sodium36.1
05/25/1993CA--WELL #4 - WELL #4Sodium21.4


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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 
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