Sewer and Stormwater Improvements

Program
About one-third of Portland’s public sewer pipes are more than 80 years old. Construction projects to repair or replace aging pipes help to protect people, property, and the environment. Find more information about current sewer, stormwater, and restoration projects.
Photo shows two workers in sewer construction vault lowering pipe into place

Featured content

Graphic shows a screen capture of a of Portland with blue markers and squares with text that says: Sewer, stormwater, and watershed restoration. Find a project.er and stormwater project"

Find Environmental Services Projects

Photo shows a trench opening in the street and large construction equipment with workers inspecting work.

What to Expect During Construction

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Sign Up for Environmental Services Project Updates

Photo shows old brick sewer pipe tall enough for a person to stand in with new fiberglass pipe liner being carried by small minature train.

Taggart Outfall Sewer Project

Photo shows curb marker saying: Green street managing stormwater with maintenance hotline 503-823-1700.

Sunnyside South Green Street and Sewer Project

Aerial photo from 1974 of the Columbia Boulevard Wastewater Treatment Plant. About half the plant is outlined to show what areas are being impacted by the STEP program.

About the Secondary Treatment Expansion Program

Engineering and Development Resources for Sewer and Stormwater Projects

Related offices, programs, advisory groups, and projects

Aerial view of bridges over the Willamette River in Downtown Portland

Environmental Services

Aerial photo of wastewater treatment plant with four areas shaded in yellow on northern end of campus to indicate project area.

Secondary Treatment Expansion Program

Downtown-Old Town Sewer Repair Program

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