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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. Apr 20

    Treebate Season Finale April 30, 2017

    It's your last chance to take advantage of Environmental Services' stormwater credit for planting trees

  2. Apr 13

    You’re invited: Southwest Portland Watershed Restoration Open House

    The event takes place on Wednesday, April 26th, from 5:30-7:30 p.m. at the Multnomah Center

  3. Apr 11

    How clean is this stream? Let's ask the amphibians.

    Monitoring of amphibian populations helps to assess the watershed health

  4. Apr 7

    Alien Plant Invader: Garlic Mustard

    Keep an eye out for this invasive species that's made its return to Portland over the last few weeks

  5. Apr 4

    High Water Hides Fish Habitat

    The Lower Columbia Slough Refugia Project provides habitat structure for migrating salmon

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.