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Portland Water Bureau

From forest to faucet, we deliver the best drinking water in the world.


1120 SW Fifth Ave, Suite 600, Portland, OR 97204

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Portland Water Bureau to Activate Maintenance Run of its Groundwater Supply

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Get Ready for Groundwater!

On Monday, August 9th, the Portland Water Bureau will begin blending a small portion of its groundwater supply in the Columbia South Shore Well Field into Portland’s water distribution system as part of its regularly scheduled maintenance operation. The groundwater supply is a complex system that must be operated regularly to identify maintenance needs and issues. By doing this maintenance operation, the bureau will ensure the reliability of the system when needed, either in an emergency or as part of seasonal supply.

The rate of groundwater pumping will vary throughout each day. The system could potentially pump as many as 18 million gallons of groundwater per day (MGD) during the day, with no pumping at night. On average, the bureau expects to pump approximately 5 MGD for approximately 10 days. This represents about 3% of the city’s total daily water demand. The operation should last no longer than Friday, August 20th.

The bureau does not expect that customers will experience significant change in water quality, if any change at all.

For information on daily Water Bureau operations, visit or subscribe to e-mail news updates through the link under News & Events on the Water Bureau’s home page at

Bull Run Watershed


Upcoming Public Meeting for Proposed Bull Run
Land Exchange



A 45-day public comment period regarding a proposed land exchange in the Bull Run watershed between the City of Portland and Mt. Hood National Forest will begin on August 16, 2010.


The purpose of the proposed land exchange is to create a better alignment of land ownership responsibilities with the respective missions of the agencies; consolidate City holdings to lands surrounding the two water supply reservoirs and associated infrastructure; and help minimize administrative costs by reducing the number of easements and administrative processes necessary to access and manage water supply infrastructure. 


A public meeting is scheduled to present information about the proposed land exchange, answer technical questions and help interested members of the public understand how to provide project input over the next two years.


When & Where:

 Thursday September 9, 2010

5:00 – 7:00 pm.

Portland Building - 1120 SW 5th Ave. (2nd Floor, Room C)

More information on the proposed land exchange can be found at the Water Bureau and MHNF websites ( and


Water Tanks

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From Forest... to Tank ... to Faucet!

Water storage tanks have two primary functions:
First, they guarantee that a particular neighborhood will have adequate water pressures during all times of day, no matter what the season.
Second, the tanks ensure that there is adequate water supply throughout the city to fight fires.
Inside the tanks, water is continuously circulated to keep it clean and fresh.