OHA Drinking Water Services

OHA Drinking Water Services
Water Advisory Details

PWS ID: OR41 00601
Advisory Type: Boil Water
Reason: E. coli, Confirmed at GW Source Without Treatment
Area Affected: System-wide
Affected Populations: All
Begin Date: Feb 10, 2021
Date Lifted: Sep 22, 2021
Who Was Contacted: Aaron Olson
Contact Phone: 503-487-7591
Details: This system has been transferred to a state regulated system because of the MPA results and are now a GU system. After speaking with the operator the system still has the boil water notice in affect because they are unable to monitor the chlorine at the entry point to the distribution to make sure they meet the 4 log-inactivation for viruss and 1 log-inactivation for giardia. They are currently working on installing the chlorine analyzer so they can be removed from the boil water advisory.

Lifted 09/22/2021:  The water system installed plugged flow piping (161 feet of 24 inch pipe) for chlorine contact time that achieves 1.0 log inactivation of giardia and now complies with the interim requirements for GWUDI sources. The boil water notice will be lifted today and the water system is planning to install filtration as required by the GWUDI determination.

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 :: PFAS
DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3376