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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

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NW Portland Sewer Extension Project

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Updated July 28, 2020

Environmental Services, the city’s sewer and stormwater utility, is completing designs on a project to add 1,080 linear feet of sewer pipe in NW Portland. Sewer extensions will allow direct access to the sewer system for properties that currently receive service through a neighboring property. This is most commonly referred to as a party sewer connection. 


Construction has been postponed from summer 2020 to January 2021 and will be completed in December 2021. Properties whose private sewer connections will be altered will be contacted individually before then. 

NW Portland Sewer Extension Project Map

Open Trench Excavation

Open trench excavation will be necessary to install the new sewer extensions and sewer service laterals to adjacent properties. It consists of excavating down to the required depth for the sewer system,installing the new pipe, then backfilling the trench, and completing final pavement restoration of the trench after the work passes inspections. Learn more about this method at

What’s Happening Now?

Over the next few months, crews will be in the neighborhood locating utilities, surveying, and drilling to take soil and pavement samples. This information will help engineers decide which locations need repair and what construction methods are best for each location. These information-gathering activities typically occur over time, rather than all at once. For details, visit

Private Improvements in the Right-of-Way

City and contractor work crews will need to access and work in the public right-of-way – specifically between the curb and the edge of the sidewalk up to your property line – in order to construct the new sewer pipes.

Anything belonging to you that is located in the right-of-way may be disturbed by construction, including irrigation systems, hard landscaping (stone, brick, pavers, garden boxes, retaining walls, or other construction materials), soft landscaping (trees, plants, shrubs, flowers, grass, bark, etc.), and other amenities. Please remove any items you wish to keep before crews get there. If the city finds items in the right-of-way that conflict with construction, crews will remove and dispose of the items.

If construction disturbs these kinds of items, the city cannot restore or replace them. However, once construction is complete, they will repair or replace sidewalks and curbs as needed. The city will also replace topsoil and grass seed in the planting strip, and any street trees that were removed.

Adjacent Projects in Northwest Portland

Several city construction projects are occurring in and around your neighborhood. To learn more about these projects and to sign up for project updates, visit the webpages below by clicking on the project name.

Flanders Neighborhood Greenway Project

Flanders Crossing Bike and Pedestrian Bridge Project

NW Flanders Sewer Capacity Project

NW Thurman Sewer Reconstruction Project

For More information

Environmental Services is committed to keeping residents and businesses informed. We encourage you to sign up now for email updates about the project, construction schedule, and what to expect as the project develops. To sign up for project updates or if you have questions concerns about the project, please:

  • Email Joe Tursi at and include “NW Sewer Extensions” in the subject line of your email.
  • Call Joe Tursi at 503-823-5753 and include your name, property address, and project name (NW Sewer Extensions) in your voicemail.
  • Sign up for email updates about the project above by clicking on the SIGN UP! Button above.