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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

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Council Crest Inflow and Infiltration Project

Updated July, 2018

Environmental Services is designing a project in the Council Crest Neighborhood (see project map). The Council Crest Inflow and map of the COuncil Crest Project AreaInfiltration Project will replace or repair aging public sewer pipes that are in deteriorating condition. Stormwater and ground water can enter sanitary sewers through roof drains, basement floor drains, foundation drains, basement sump pumps, driveway drains, cracked sewer laterals, or cracked sewer mains. This is known as Rain Derived Inflow and Infiltration (RDII). By repairing existing pipes, this project will help keep stormwater and groundwater out of the system, while safely carrying sewage to the treatment plant.

Smoke Testing Coming in August 2018

Environmental Services will be smoke testing sanitary sewers in your neighborhood to identify locations where stormwater and groundwater flow into sewer pipes. 

Smoke testing will begin in mid-August, and is expected to last approximately 2 weeks.

The tests use smoke balls (a device that produces smoke) to identify the locations of cracks, loose connections, and pipe deficiencies. Smoke testing will also help identify if any stormwater inlets are incorrectly connected to the sanitary sewer. There should be no noise or odor associated with this test. 

We will use the information gathered during smoke testing to help design a project in the Council Crest neighborhood to repair any cracks, loose connections, and other deficiencies to protect public health and our local streams and waterways from contamination from possible sanitary sewer overflows.


This project is in the early "pre-design" phase.  Once the pre-design investigations are complete, Environmental Services will develop a schedule for design and construction of this project.

For More Information

The best way to receive information on project activities is by signing up for email updates here. If you have any questions or comments, please feel free to contact Aaron Abrams at or call 503-823-2827.

Several sewer construction projects are happening simultaneously around your neighborhood. To see where they are and for project updates, visit our websites: 

Middle HillsdaleHillsdale South, Hillsdale Crest, and South Portland-Burlingame