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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Dioxin at Superfund sites

Dioxin is commonly found at hazardous waste sites, including sites on EPA’s National Priority List, for which the cleanup is managed under EPA’s Superfund program. EPA has information to help assessors of Superfund sites characterize soil contaminated with dioxins.

Specifically, EPA provides:

Have questions about this information? Contact the Superfund helpdesk for additional help.