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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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SW Terwilliger Boulevard Sewer Construction Completion Survey

Environmental Services has completed installing about 7,600 feet of eight-inch sewer in SW Terwilliger Boulevard from SW Northgate Avenue to Highway 43. The new Terwilliger sewer connects to the 30-inch Tryon Interceptor sewer, which carries sewage to the Tryon Creek Wastewater Treatment Plant in Lake Oswego. This improvement to the wastewater collection system helps protect water quality, public health, and our environment.

View the project map at

This was a major construction project and we know it meant significant inconvenience for many people living in the area. We appreciate your cooperation and patience during construction.

Our staff notify the public in advance of construction activities, provide information throughout the project, and work to resolve problems during construction. Our intent is to identify concerns and minimize disruption as much as possible while completing these necessary projects. Please help us assess the effectiveness of these efforts by completing the survey below.

If you have additional questions or suggestions, please contact Debbie Caselton at 503-823-2831 or

Post-Construction Survey: SW Terwilliger Boulevard Sewer Project
I am: (choose best one)

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Which ONE of the above is your preferred method?
How satisfied were you with the communication and information you received about this project? (check one)
If you had questions or concerns regarding the project, how satisfied were you with the project team’s response? (check one)
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