We provide sewer services to the Dunthorpe neighborhood of southwest Multnomah County and a small portion of Clackamas County.

Manager: Tom Hansell
1620 SE 190th Ave.
Portland, OR 97233
503.988.0223
Contact us online.

Am I in the district?
See our sewer district map to locate the boundaries and key infrastructure.

If you live in the district, you will be automatically enrolled for service and assessed through your property tax bill. No action is required on your part.

The assessment will appear on your property tax bill as Dunthorpe-Riverdale County Service District No. 1.

The district is governed by the Board of County Commissioners, and managed by the Department of Community Services.