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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


More Contact Info

Source Water Treatment

Where Portland’s drinking water comes from and how the Portland Water Bureau treats your drinking water.

Bacterial Monitoring

How the Portland Water Bureau samples and tests for bacterial contamination.

Unidirectional Flushing

The flushing of water mains is part of the Water Bureau’s on-going water quality and system maintenance work.

Frequently Asked Questions about Water Quality

Answers to common water quality questions.

Drinking Water Test Results & Reports

Portland’s test results from over 11,000 water samples collected each year.

Reducing Lead Exposure

Information and resources to reduce exposure and hazards from lead in water.

Cross Connection & Backflow

Monitoring and maintenance of the drinking water distribution system to reduce risk of contamination.

Developments in Water Quality

Information about compounds that are not currently regulated.

Drinking Water Quality at Home

Learn more about water quality concerns that may happen in the home and what you can do about them.