Excel Spreadsheet
PWS ID: 90872 ---- NORTHWEST ALUMINUM COMPANY

MCL = 0.010 mg/L; MCL exceedances are indicated with red text.
ND = Not detected at the minimum reporting level.
Arsenic Samples
Sample ID Sample
Date
Date
Received
Source Name Source
ID
Result
(mg/L)
Comments
1910126701-I 10/29/2019 12/12/2019 EP FOR WELL #1 & #3 EP-AND
1910122001-I 10/28/2019 01/31/2020 EP FOR WELL #3 EP-BND
PTI070401-I 09/21/2010 10/12/2010 EP FOR WELL #1 & #3 EP-AND
PTH051701-I 09/15/2010 10/12/2010 EP FOR WELL #3 EP-BND
PTI051501-I 09/15/2010 10/12/2010 EP FOR WELL #4 EP-CND
A50823M 08/22/2005 01/10/2006 EP FOR WELL #1 & #3 EP-AND
A50823N-1 08/22/2005 01/10/2006 EP FOR WELL #3 EP-BND
A50823O-1 08/22/2005 01/10/2006 EP FOR WELL #4 EP-CND
A21122AH-1I 11/21/2002 01/15/2003 EP FOR WELL #1 & #3 EP-AND
A21122AG-1I 11/21/2002 01/15/2003 EP FOR WELL #3 EP-BND
A21122AK-1I 11/21/2002 01/15/2003 EP FOR WELL #4 EP-CND
 

Archived Arsenic Samples
Sample ID Sample
Date
Date
Received
Source Name Source
ID
Result
990602SAA 06/01/1999 09/20/1999 WELL #1 AAND
990602SBA 06/01/1999 09/20/1999 WELL #3 BAND
990602SCA 06/01/1999 09/20/1999 WELL #4 CAND
9605-163-1 05/29/1996 07/30/1996 ENTRY POINT - WELL #1 AND
9605-163-2 05/29/1996 07/30/1996 ENTRY POINT - WELL #3 BND
9605-163-3 05/29/1996 07/30/1996 ENTRY POINT - WELL #4 CND
10862 03/24/1993 11/10/1993 WELL #3 - WELL #3 BAND
10902 03/08/1993 11/10/1993 WELL #4 - WELL #4 CAND
10813 02/22/1993 11/10/1993 WELL #1 - WELL #1 AAND
 




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
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 799