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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

More Contact Info

SE Claybourne Street and 135th Avenue Sewer Extension Project

Updated October, 2019

Контакт для информации на русском языке Светлана Хедин: 503-823-8764 или

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Environmental Services, the city’s sewer and stormwater utility has completed design of an extension of the public sewer system in your neighborhood. The SE Claybourne Street and 135th Avenue Sewer Extension Project will install up to 4,120 feet of main line public sewer pipe, 17 manholes, and 2,150 feet of service laterals that will connect individual properties to the public sewer system. This project will help protect public health, water quality and the environment.

Schedule Update

The Claybourne project has been approved by the Portland City Council.  Environmental Services is working to select a contractor this winter.  Construction is expected to begin in the spring of 2020 and will take about one year to complete. Environmental Services will send out more details on the timing and schedule of this project after the contractor is hired in early 2020.

Claybourne project map

Cesspool/Septic Connections

Bureau staff have been working directly with property owners in the area who have cesspools or septic tanks that will need to be connected to the new system.  By now, you should have received notification if your property is one that is required to connect to the sewer system.  If your property is a required connection, you should have received a “branch map” showing the proposed connection location for your property.  For questions about your planned connection or your branch map, please contact Brooke Flahaven at 503-823-7869 as soon as possible.

For More Information

Contact Aaron Abrams at Environmental Services by phone at 503-823-2827 or by email if you have questions or concerns. Please let us know if you have concerns such as maintaining driveway access, business operations, medical deliveries, disability issues, or other needs during construction.

Frequently Asked Questions

From Residential Septic to Public Sewer