Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

Contact Us About EJ Research

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.

Send e-mail to: ferster.aaron@epa.gov

Mailing Address:
US Environmental Protection Agency
Office of Research and Development
Mail Code 8101R
1200 Pennsylvania Avenue
Washington, DC 20460
Attn: Aaron Ferster