OHA Drinking Water Services

OHA Drinking Water Services
Water Advisory Details

PWS ID: OR41 01172
Advisory Type: Boil Water
Reason: E. coli, Confirmed at GW Source Without Treatment
Area Affected: System-wide
Affected Populations: All
Begin Date: Jun 21, 2022
Date Lifted: Jun 23, 2022
Who Was Contacted: Robert Trotter, Hiland Water
Contact Phone: 971-832-9148
Details: One of the 5 confirmation samples taken at the well for Western Hills MH Estates tested positive for e. coli system is now currently on a Boil Water Notice. OHA DWS sent a letter detailing the next steps and options for corrective action.

Lifted 06/23/2022:  On 6/23/2022, Robert Trotter notified DWS and me that based on chlorine residual, pH, temperature, flow rate and amount of pipe to reservoir, they achieve a CT of 6. They have been able to achieve 4-log deactivation. They also got the results back from their special coliform/bacT sample which came back negative. The Boil Water Notice for the system has been lifted.

Associated Alerts: COLI22177 - 06/13/2022 - COLIFORM (TCR) , E. COLI  See also: 12/15/2022, 06/23/2022, 06/13/2022

COLI22206 - 06/21/2022 - COLIFORM (TCR) , E. COLI  See also: 12/27/2022, 12/15/2022, 06/23/2022, 06/22/2022, 06/21/2022

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Coliform Summary :: Coliform Results :: Sampling Schedule for Coliform :: Groundwater/GWUDI Source Details :: Plan Review :: Annual Fee
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DBPs :: TOC & Alkalinity :: DBP Sample Sites :: FANLs :: MRDL :: Turbidity :: SWTR :: RAA :: LRAA For SDWIS: 3566