OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00305
Who Was Contacted: Andy Sewall
Contact Phone: 503-747-9827
Contact Date: 06/16/2021
Contact Method/Location: Phone
Assistance Type: OTHER WATER QUALITY - Chlorine Supply Shortage
Reasons: Chlorine
Details: 6/16/21: System reached out to DWS staff inquiring about temporarily ceasing prechlorination to stretch sodium hypochlorite supply in response to the potential future chlorine supply shortage.

6/17/21: System ceased prechlorination on 6/16/21, plans to closely monitor residuals, and will keep DWS staff updated.

6/23/21: Current on-site sodium hypochlorite inventory is 378 gallons. A 500 gallon delivery of 12.5% sodium hypochlorite is expected tomorrow (6.24.21) and with this shipment the system's chlorine supply is expected to last until around July 21, 2021.

6/29/21: On 6/22 the system increased finished water chlorine residual target from 0.6 mg/L to 0.9 mg/L and slowly stepped back in to prechlorinating on 6.24.21

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