TRI Dioxin and Dioxin-like Compounds and TEQ Data Files: Calendar Years 2008 - Present
- Includes reporting forms processed as of: October 23, 2024
Facilities report dioxin and dioxin-like compounds mass quantity data on the Toxics Release Inventory (TRI) Reporting Form R Schedule 1. Each Dioxin TEQ file is presented in .csv (comma-separated value) file format and zipped (compressed) by year.
File Types and Contents
The six types of Dioxin TEQ files are:
- Toxic Equivalency Factors (TEFs)
- Schedule 1 Congener
- Toxic Equivalents (TEQs)
- Transfers
- Water Congener
- Water Toxic Equivalents (TEQs)
More About Dioxin Reporting
There are 17 distinct members of the TRI dioxin and dioxin-like compounds chemical category. Facilities that have any of the information required by Reporting Form R Schedule 1 must submit individual dioxin member data via Schedule 1, in addition to completing the Form R.
To account for how dioxin and dioxin-like compounds vary in toxicity, EPA calculates weighted values called toxic equivalents (TEQs) using the individual mass quantity data (grams) reported by facilities and the associated Toxic Equivalency Factors (TEFs). TEQs allow for a better understanding of the toxicity of chemical releases at facilities.
File Documentation and Help
- For more information about using these files, see the TRI TEQ Data Files Guide (PDF).
- You can email us your question or comment.