OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00218
PWS Name: CORNELIUS, CITY OF
 
Who Was Contacted: Rene Redelsperger
Contact Phone: 503-357-3011 ext 5033573011 (Email address hidden)
Contact Date: 09/18/2019
Contacted By: BAIRD, GREGG (DWP)
Contact Method/Location: Email
 
Assistance Type: WATER QUALITY ALERT RESPONSE
Reasons: Coliform
 
Details: Rene notified me that Cornelius had another routine positive total coliform (the second this month) that was collected yesterday 9/17 from 901 S 1st Ave. Three repeats (original site, upstream, downstream) will be collected today. Chlorine residual was normal (0.8 ppm). Rene mentioned that it was raining heavily when the sample was collected, otherwise no other possible cause. I let Rene know that having 2 or more positive total coliform samples in the same month triggers a Level 1 Coliform Investigation which must be done within 30 days and I sent him the investigation form. Will wait for results from repeats and respond accordingly. UPDATE 9/30/19: the 3 repeats were absent, no further action required. The Level 1 investigation form was submitted 9/24/19. Potential cause of positive routine sample attributed to dropping the sample cap on the ground on a rainy day. System will review proper sampling protocol.
 
Associated Alerts: COLI19269 - 09/18/2019 - COLIFORM, TOTAL (TCR)



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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 
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Lead & Copper :: Corrosion Control (LCR) :: Nitrate :: Arsenic :: Radionuclides :: GWR 4-Log :: LT2 :: Cyanotoxins :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 4033