Water Quality

​​DEQ is launching a Triennial Review process to review Oregon water quality standards and determine priority projects for the next three years. During this process, DEQ will get public input on a list of priority water quality standards review and revision needs. The result will be a report that outlines the projects that DEQ's water quality standards program will initiate between 2021 and 2023. DEQ plans to complete the review process by summer 2021.

The Clean Water Act requires states to periodically review and revise water quality standards and hold public hearings about those proposed changes. The purpose of revising the standards is to incorporate new environmental scientific information, meet federal requirements or improve clarity and program implementation. The Triennial Review itself doesn't result in changes in water quality standards, but it will prioritize the projects for water quality standard changes.

Now accepting public comment

DEQ is now accepting public comment on the list of priority water quality standards review and revision needs for the 2021 Triennial Review. The public comment period begins on April 7, 2021, and will close at 5 p.m. on May 24, 2021. During this time, DEQ will hold an informational meeting and a public hearing. See the public notice document for additional information on how to attend these meetings and how to submit comments. Please use the public comment form to guide and structure comments on the project priorities document for comment.

Submit your comments: Public Comment Form

Public meeting and hearing information

Public Informational Meeting: Wednesday, April 21, 2021, 6 p.m.

Public Hearing: Tuesday, May 4, 2021, 1 p.m.

Join Zoom Meeting 
Dial-in: 833 548 0282 US Toll-free
Meeting ID: 833 9659 3403
Passcode: 182976

​​Documents for public comment

Previous Triennial Review documents



Debra Sturdevant, 503-229-6691
Kaley Major, 503-229-6121​

If you have questions please email:


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DEQ will also add new information about the Triennial Review to this web page at key milestones.