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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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Drinking Water Test Results & Reports

Drinking water test results and reports

The Portland Water Bureau conducts compliance monitoring on a daily basis to ensure water quality meets EPA standards. Every year, water quality technicians regularly use about 90 sampling stations around the city to collect over 11,000 water samples. Over 49,000 water quality tests are conducted on those samples at the Portland Water Bureau Water Quality Laboratory.

The results from the water quality tests are used to ensure that the Portland Water Bureau and Portland's drinking water meets all state and federal regulations. Results are regularly reported to the EPA, State of Oregon, and the public. Some of these results and reports are available here.


In this section, you will find:

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

Water Quality Summary

A summary of water quality from Bull Run and groundwater sources. The Portland Water Bureau is currently serving 100% Bull Run water.

Other Water Quality Reports

The Portland Water Bureau provides several water quality reports to the public, including the Triannual Water Quality Analysis and annual Watershed and Treatment Variance reports.