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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

  • Find out water quality results—posted each week.

  • We are Portland's sewer and stormwater services provider.

  • 100% Waste Methane Recovery. Learn more.

  • We work to protect and improve watershed health.

  • We plan, design and construct system improvements.

  • We work with industries to pretreat wastewater and manage stormwater onsite.

  • Learn more about the stormwater discount program.

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. Oct 4

    Helping Salmon in Our City: Culvert Removal and Replacement in Portland

    Salmon season is upon us, and it’s a great time to look at some of the projects Environmental Services has been working on to improve salmon habitat.

  2. Sep 20

    Celebrate Salmon at Sunday Parkways this Sunday, September 24th

    The fourth annual Salmon Celebration will be part of the Sellwood-Milwaukie Sunday Parkways, taking place Sunday September 24th from 11 a.m to 4 p.m.

  3. Aug 29

    Before and After: Thanh Thao Restaurant Rain Garden

    Environmental Services works with private property owners in targeted areas to keep runoff out of the combined sewers.

  4. Aug 22

    Back to School: Kids Learn and Teach "Only Rain Down the Storm Drain"

    Students raise awareness of stormwater pollution. Here's how you can do your part.

  5. Aug 15

    Visit Environmental Services at Multnomah Days Sat. Aug 19

    The annual Multnomah Days takes place this Saturday August 19 from 9 am to 4 pm in Multnomah Village, SW 25th and Capital Highway

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.