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 This website is no longer updated and links to external websites and some internal pages may not work.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

EJSCREEN: Environmental Justice Screening and Mapping Tool

Technical Information about EJSCREEN

This page contains in-depth information about the technical aspects of EJSCREEN. Please make sure to familiarize yourself with the caveats and limitations section to understand what the tool is intended for and its appropriate uses or explore the data and code that were used to create the tool.

 You may also explore information about the detailed aspects of the tool in the EJSCREEN Technical Documentation