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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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Comment on the 2020 Sewer and Drainage Facilities Design Manual

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Environmental Services is updating its Sewer and Drainage Facilities Design Manual (SDFDM). The proposed updates to the manual will improve clarity, formalize and update technical requirements, eliminate obsolete information, and remove any discrepancies between the SDFDM and the City's Stormwater Management Manual (SWMM). In addition, design and formatting changes to the revised SDFDM will better connect users with web-based resources.

What is changing?

The materials posted here will provide you with an overview of the changes:

How can I comment on the proposed changes? 

Environmental Services will accept public comment on the proposed changes to the SDFDM from 8 a.m. Monday, Aug. 5 through 5 p.m. Friday, Sept. 6. Public comments may be submitted using the online form or by email to

Environmental Services has canceled the August 29 public hearing because we received no requests.

How can I learn more about the proposed changes?

Environmental Services will hold information sessions to present key changes and major improvements to the SDFDM on:

  • Monday, Aug. 19, from 9-10 a.m. in Room 4a of the Bureau of Development Services, 1900 SW 4th Ave, Portland, OR 97201
  • Wednesday, Aug. 21, 10-11 a.m. in Civic Hub Conference Room #1 of the Penumbra Kelly Building, 4747 E Burnside St, Portland, OR 97215
  • View the presentation from the information sessions.