OHA Drinking Water Services

OHA Drinking Water Services
Water Advisory Details

PWS ID: OR41 05860
Advisory Type: Boil Water
Reason: E. coli, Confirmed in Distribution
Area Affected: System-wide
Affected Populations: All
Begin Date: Nov 04, 2021
Date Lifted: Nov 08, 2021
Contacted By: DOWNS, KENT (DWP)
Who Was Contacted: Jean Ochtsner
Contact Phone: 503-702-5823
Details: On 11.01.21 the operator collected three temporary routine samples and one triggered sample. One temporary routine tested E.coli positive and the other two were Total Coliform positive. The triggered sample showed no bacterial contamination. A level 2 coliform investigation was completed on 11.04.21. The investigation found that the operator collected samples from outdoor sampling sites during a heavy rainfall with high winds, which could have easily contaminated the samples. The operator collected repeat samples on 11.03.21 and a boil water notice was posted on 11.04.21. The notice will remain in place until test results for repeat samples can demonstrate absence of bacterial contamination.

Lifted 11/08/2021:  No coliform contamination found in repeat samples and triggered sample collected on 11/03/21.

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