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If you are unable to access the CDX Log-in page, please make sure the "Use TLS 1.0" browser security setting is enabled for the internet browser you are using. If you require further assitance on this, please call/email the CDX Help Desk.

The Central Data Exchange (CDX) Help Desk is available for:

By Telephone:
Call our toll-free line between the hours of 8:00 am and 6:00 pm (ET) at 888-890-1995. For callers from Puerto Rico and Guam, please reach us at 970-494-5500.

By E-mail:
Send e-mail correspondence to helpdesk@epacdx.net.

By Mail:

CGI Federal, Inc
c/o EPA Reporting Center
12601 Fair Lakes Circle
Fairfax, VA 22033

Contact Form

To report problems with EPA's CDX Webpages, please email us using the form below. If your browser does not support forms, you may also email us directly at helpdesk@epacdx.net.

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