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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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Learn About Sewer Construction Methods

Portland's sewer collection and treatment system includes approximately 2,500 miles of sewer pipes. About one-third of those pipes are 80 years old or older.

Environmental Services and our contractors are working throughout Portland neighborhoods to repair and replace critical sections of deteriorating sewer pipes. Timely repairs will protect public health and the environment by reducing the risk of sewage releases to buildings, streets, greenspaces, rivers, and streams.

For some projects, traditional open trench sewer construction is the only feasible construction method available. But when possible, Environmental Services uses trenchless methods, or a combination of trenchless and open trench construction, to repair and replace sewer pipes. Trenchless methods minimize disruption to sidewalks, curbs, streets, traffic, and other utilities, and reduce impacts on the neighborhood. Click the links on this page to read more about sewer construction methods.