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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

More Contact Info

  • Portland's wastewater and stormwater management utility

  • working with industries to pretreat wastewater discharges and manage stormwater onsite

  • protecting and improving watershed health

  • operating and maintaining wastewater and stormwater collection and treatment facilities

  • planning, designing, constructing public sewer improvements

  • business opportunity program, required sewer connection, stormwater discounts

Our Mission Statement

Environmental Services protects public health, water quality and the environment. We provide sewage and stormwater collection and treatment services to accommodate Portland's current and future needs. We protect the quality of surface and ground waters and conduct activities that plan and promote healthy ecosystems in our watersheds.

City Green Blog View all »

  1. Feb 21

    Tryon Creek Volunteer Opportunity this Weekend

    Join the Tryon Creek Watershed Council for their annual Watershed Wide event on Saturday, February 25th

  2. Feb 13

    KOIN 6 News on Foster Floodplain and the Flood that Wasn’t

    The added flood storage means less frequent flooding in the surrounding neighborhoods and businesses

  3. Feb 10

    West Willamette Restoration Partnership is Featured in New Story Map

    The interactive website highlights the accomplishments of the collaborative project in Southwest Portland

  4. Feb 1

    Environmental Services’ Lower Slough Refugia Project to Receive an Achievement Award from the Columbia Slough Watershed Council

    A series of log jams installed in the Columbia Slough will provide refuge for endangered fish

  5. Jan 25

    Environmental Services Tree Program Brings 500 Trees to Commercial and Industrial Areas this Winter

    Planting remains on schedule despite this winter’s snow storms.

Treatment Plant Tour

The Columbia Boulevard Wastewater Treatment Plant is Oregon's largest water reclamation facility. Come and see firsthand how the plant works. Book individual or group tours at For more information, call 503-823-2400.