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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

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Sewage release on SW Montgomery Drive

Sanitary Sewage Overflow Advisory

December 8, 2015

A landslide on Monday night broke a city sewer pipe on SW Montgomery Drive just east of SW Vista Avenue. Sewage from the broken pipe flowed downhill on at least four streets for several hours, and drained back into the city’s combined sewer system near SW 18th Avenue and SW Market Street.

City maintenance crews verified the broken pipe just after 7:00 p.m. yesterday and estimated that sewage was flowing from the break at a rate of about 10 to 15 gallons per minute. By 10:45 p.m. yesterday, they completed setting up a temporary system to pump sewage from a manhole upstream of the broken pipe to a downstream manhole to bypass the broken section and stop the sewage release.

The city is planning to make temporary repairs to stabilize the pipe until engineers finish designing permanent repairs. Streets affected by the sewage release are SW Montgomery Drive, SW Cable Avenue, SW 18th Avenue and SW Mill Street Terrace. Maintenance crews posted sewage spill warning signs on those streets.

For more information contact Linc Mann, 503-823-5328.

The Bureau of Environmental Services works with Portland residents and businesses to protect water quality, public health, and the environment through wastewater collection and treatment, sewer construction and maintenance, stormwater management, and stream and watershed restoration.