OHA Drinking Water Services
OHA Drinking Water Services
Contact Report Details

PWS ID: OR41 00657
PWS Name: PORTLAND WATER BUREAU
 
Who Was Contacted: Scott Bradway
Contact Phone: -- (Email address hidden)
Contact Date: 04/18/2022
Contacted By: GENTRY, CARRIE (DWP)
Contact Method/Location: Email
 
Assistance Type: OTHER REGULATORY - Portland Water Bureau adjusting alkalinity at Lusted
Reasons: Lead or Copper
Operations
 
Details: Scott emailed DWS to notify us that Portland Water Bureau will adjust the alkalinity to approximately 25 mg/L as Calcium Carbonate. It may take up to 2 weeks for the increased alkalinity to reach all locations in the distribution system.

This adjustment is the first step in the new corrosion control treatment and future steps will adjust the pH to a target of 8.6. The next step will be to increase the pH from 8.3 to 8.5 in late May, and then adjust the pH again in late June to 8.6.


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