Help Center

Welcome to the Help Center

Featured portals

  1. CDX Help Desk

    Welcome! You can chat with the CDX Help Desk using the Chat with Support button below.
    The button to initiate a new chat will only display during business hours.

    Chat is available Monday through Friday from 8:00AM to 6:00PM Eastern Time.
    If you are attempting to contact the Help Desk outside of business hours you can email us at helpdesk@epacdx.net or call and leave a voicemail which we will return during business hours.
    Phone: 1-888-890-1995
    International Phone: 970-494-5500
    https://cdx.epa.gov/Contact
    Chat support is provided by Cherokee Nation System Solutions(CNSS)

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