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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

Odor Notification

  • Columbia Boulevard Wastewater Treatment Plant

  • Columbia Boulevard Wastewater Treatment Plant Dry weather clarifier odor control and treatment system

  • Portsmouth Ventilation Odor control and treatment facility

  • Influent Pump Station Odor control and treatment system

  • Columbia Boulevard Wastewater Treatment Plant Headworks odor control and treatment system

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Odor Notification Alert: December 31, 2019


We are taking headworks booster fan #11 out of service for inspection, cleaning and repair. The booster fan will be offline from December 31 through January 10 while we are cleaning, inspecting and performing repairs. While we take this booster fan out of service, the primary fans will be in service, but it is possible for odors to be produced. While we don’t anticipate these odors to be perceptible outside our campus, this is a possibility until the work is complete. We know these odors can be unpleasant and we make every effort to reduce them.

Odors produced from the collection system and wastewater treatment plant are captured and treated through a variety of processes. Occasionally, maintenance activities will hinder our ability the capture and treat these odors, allowing them to be perceptible in surrounding neighborhoods. Environmental Services issues notification regarding these maintenance projects that may result in odors outside our campus boundaries.




How to Report Odors

How to Get Odor Information

Subscribe to odor notification email

Click here to receive odor alerts by email

Go to the online odor report form

Fill out and submit this form online to let us know about odor problems

Tour The Treatment Plant

Request a tour of the Columbia Blvd Wastewater Treatment Plant.