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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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The Portland Water Bureau provides several water quality reports to the public:2015 Water Quality Report

2015 Drinking Water Quality Report

Annual water quality report is made available to all customers each June. Contains results of detected regulated contaminants from calendar year 2014. Also has useful information about Portland's water system.

Also available in:

Chinese      Russian     Spanish       Vietnamese  

Past Drinking Water Quality Reports are available online.

Recent water quality analyses
Three times a year the Water Bureau produces the Triannual report with current water quality results.

Bull Run Source Water Assessment  
As required by the Safe Drinking Water Act, the Source Water Assessment identifies the potential contaminants of concern in the Bull Run water supply.  

Watershed Control Program Report for Water Year 2014
As required by the Safe Drinking Water Act, the Watershed Control Program Report Identifies current activities affecting water quality, and projections of future impacts or activities in the watershed.

Water Quality of Bull Run Compared to Groundwater 
As of Thursday October 1st, the Portland Water Bureau is supplementing Bull Run water with approximately 60% groundwater from the Columbia South Shore Well Field.

On July 16th, the Portland Water Bureau began blending water from the Columbia South Shore Well Field in to the distribution system for supply augmentation. Groundwater was initially used to supplement approximately 20% of Portland's drinking water. Due to the dry spring, summer and early fall weather, above average temperatures, and available long-term weather forecasts, the Portland Water Bureau will continue to utilize the Columbia South Shore Well Field to supplement supply for the immediate future. Portland is fortunate to have access to two excellent water sources that allow us to be prepared to meet the range of supply and demand conditions that occur in the Portland water system. Depending on location, it will take between one and eight days for groundwater to move through the distribution system and reach customers. For more information about Portland’s drinking water quality, call the Water Line at 503-823-7525. Updates on Portland's water supply can be found on the Summer Supply Planning page.

Annual Water Quality Report

Read important information about your drinking water. The report is updated every year in June.

Request a Paper Copy

Online form to request a paper copy of the Annual Drinking Water Quality Report

Most Recent Water Quality Analyses

Triannual Water Quality Report