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The City of Portland, Oregon

Portland Water Bureau

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

Customer Service: 503-823-7770


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Water Quality Summary

The Portland Water Bureau is currently delivering 100% Bull Run water.

The table below is a summary of the water quality data for Bull Run water and groundwater from past results. This table provides an estimate of water quality and the actual results at your tap may differ from what is shown below based on natural variation within the drinking water system or how the Portland Water Bureau is operating the system. The Portland Water Bureau is currently delivering 100% Bull Run water, and groundwater estimates are included below as a comparison.

Last Updated: June 6, 2018

  1. Most recent values measured in Bull Run raw or treated water.
  2. Average values measured at the Groundwater Pump Station Outlet from 2007 through 2017.
  3. (S) denotes a secondary standard established by the EPA as a guidance to assist public water systems in managing drinking water for aesthetic considerations, such as taste, color and odor. These contaminants are not considered to present a risk to human health at this standard.  

For more information about Portland’s drinking water quality, call the Water Line at 503-823-7525 or visit