Phone: 503-823-7740
Fax: 503-823-6995
1120 SW 5th Avenue, Room 1000, Portland, OR 97204
Columbia Boulevard Wastewater Treatment Plant
The Columbia Boulevard Wastewater Treatment Plant is part of a sewage collection and treatment system that serves more than 600,000 customers. Nearly 100 sewage pump stations and more than 2,500 miles of pipes convey wastewater to the facility 24 hours a day. The plant operates every day around the clock to manage, monitor and adjust the collection system and treatment process.
Columbia Boulevard Treatment Plant Overview
Portland's largest wastewater treatment facility
Treatment Process
What happens when sewage reaches the plant
Beneficial Reuse of Portland Biosolids
Natural, nutrient-rich by-products of wastewater treatment
Beneficial Reuse of Biogas
Reusing renewable energy sources
Odor Notification
Receive odor notifications or report odors
Lagoon Reconstruction
Work is underway
Citizen Advisory Committee
Committee members, mission, meeting minutes
Evolution of Portland Wastewater Treatment
How we got here
Questions and Answers
Answers to frequently asked questions
What's New at the Columbia Boulevard Wastewater Treatment Plant
Treatment plant newsletter