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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

More Contact Info

SE Claybourne Street and 135th Avenue Sewer Extension Project

Sign up for email construction updatesEnvironmental Services, the city’s sewer and stormwater utility, is designing a project to extend the public sewer system to approximately 90 properties currently being served by residential septic systems. The SE Claybourne Street and 135th Avenue Sewer Extension Project will provide properties that have aging septic systems, some of which have already failed, connections to the public sewer system that the City of Portland will build, manage and maintain. This project will help protect public health, water quality and the environment.


The design phase with run through 2017. Construction is tentatively scheduled to begin in the spring of 2018 and take about a year and a half to complete.

Upcoming Informational Presentation

Please plan to join us on February 16 at 6:30 p.m. at Zenger Farms for a presentation and an opportunity to discuss the project with city staff. For details, click here.

 Project Area Map

For More Information

Contact Joe Annett at Environmental Services by phone at 503-823-2934 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.

What's Happening Now

Pre-construction tasks and FAQ

Public Meetings

Upcoming meetings at which to learn more about the project