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 This website is no longer updated and links to external websites and some internal pages may not work.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


Resources for the Mercury Inventory Reporting Rule

The following guidance materials provide information on the reporting requirements contained in EPA’s mercury inventory reporting rule.

These resources include a compliance guide and user guide for EPA's Mercury Electronic Reporting (MER) application. The MER application can be accessed through the Agency's Central Data Exchange (CDX).

Read frequent questions about the mercury inventory reporting rule.

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