OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 90872
PWS Name: NORTHWEST ALUMINUM COMPANY
 
Who Was Contacted: Caitlin Bryan
Contact Phone: 503-690-9821 (Email address hidden)
Contact Date: 10/06/2020
Contacted By: BAILEY, NICOLE (WASCO COUNTY)
Contact Method/Location: Phone
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Coliform
 
Details: I called Caitlin today to talk about the repeat distribution samples that came back total coliform positive. This has triggered a level 1 investigation. We have some ideas of why the positives have occurred and this will be reflected on the investigation. The first issue noticed was that the chlorine residual has been reported at about 0.06 which is too low for sanitizing the drinking water through distribution. She has made changes to freshening the chlorine tablets which got the concentration up to 0.11. The system will be contacting the manufacturer if the concentration continues to be an issue further. The other issue noticed on the water system was that the screen was pushed to the side on the reservoir. This has been fixed and will hopefully reflect on further testing.
 
Associated Alerts: COLI20347 - 10/02/2020 - COLIFORM, TOTAL (TCR)   See also: 10/29/2020



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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