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TSCA Chemical Substance Inventory

Contact Us About the TSCA Chemical Substance Inventory

WARNING - DO NOT e-mail any Confidential Business Information (CBI) to EPA. EPA's e-mail system is NOT secured to protect CBI.

General TSCA Inquiries:

Email the Toxic Substances Control Act Hotline (

Call (202) 554-1404. The TSCA hotline operates Monday through Friday, from 8:30 a.m. to 5:00 p.m. Eastern time.  

FAX (202) 554-5603.

TSCA Inventory Inquiries:

Send e-mail to:

Report an environmental violation

Report possible violations of environmental laws and regulations.

Mailing Address:
Tracy Williamson
Attention: Toxic Substances Control Act (TSCA) Chemical Substance Inventory
Mailcode: 7406M
1200 Pennsylvania Ave., N.W.
Washington, DC 20460

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