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 This website is no longer updated and links to external websites and some internal pages may not work.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

Toxics Release Inventory (TRI) Program

TRI Basic Plus Data Files Guides: Calendar Years 1987 - 2016

These documents describe field-by-field contents of the nine files which collectively contain all of the data reported on the TRI Reporting Form R and Form A Certification Statement. 

The types of data in TRI Basic Plus Data Files:

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