We’ve made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Contact us about Dioxin

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Please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response.

Since the EPA Dioxin website centers around the IRIS assessment for 2,3,7,8-Tetrachlorodibenzo-p-dioxin, we are directing questions about this chemical to the USEPA IRIS Hotline. You can request assistance by telephone at (202) 566-1676, by email at hotline.iris@epa.gov, by using the comment form below, or by writing to:

IRIS Hotline
c/o EPA Docket Center, Mail Code 28221T
EPA-West Building
1301 Constitution Avenue NW
Washington, DC 20005

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