An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Columbia River

2019 Columbia River Basin Toxics Reduction Status Update

This report is an update on work efforts in the Columbia River Basin to reduce toxic contaminants which threaten the health of people, fish and wildlife in the Basin. This work has been led through a broad effort based on coordination and partnerships by the Columbia River Toxics Reduction Working Group.

Since 2005, the Working Group has been working collaboratively to develop and implement toxics reduction and assessment actions including:

  • Water quality monitoring.
  • Agricultural best management practices (BMPs) and performance-based certification programs.
  • Green infrastructure.
  • Green chemistry.
  • Public education.
  • Collection and disposal of pesticides and pharmaceuticals.
  • Clean-up of contaminated sites.

Specifically, this report provides information derived from the Working Group partners on the most successful actions in reducing and assessing toxics since 2010 and the work efforts that are needed to reduce toxics in the Basin to benefit human health and the health of fish and wildlife.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.