Welcome to the CDX Development environment. This is a non-production environment and is not to be used for any regulatory activity.

CDXCentral Data Exchange

Online Registration User Guide

The online user guide provides step-by-step instructions for the CDX registration process. Follow the process steps below or view the downloadable version (3 pp, 2.8MB, About PDF).


Step 1: Go to cdx.epa.gov and Register

On the Central Data Exchange (CDX) homepage click the “Register with CDX” button to start the registration process.

Step 2: Accept the Terms and Conditions

By accepting the terms and conditions you agree to abide by the system requirements and the system will allow you to access CDX.

Step 3: Select a Program Service

To select a program service, type the flow name or descriptor to filter the results or select from the full list.

Step 4: Provide a Role and Additional Information

If a program service has more than one role or requires additional information, select the role and/or fill out all required additional information.

Step 5: Provide User Information

Enter a unique User ID and email address.

Step 6: Proceed to Login.gov

Continue to Login.gov to setup or login to an existing account. After logging in successfully, the system will redirect back to CDX to complete setup.

Step 7: Provide User Information

Fill out the personal information, and answer three security questions.

Step 8: Provide Organization Information

Search for an existing organization. If a matching organization is not found, create a new organization. Then Submit Request for Access.

Step 9: Complete Registration and Additional Validation

Once registration is complete the system opens the MyCDX page. On future visits, log in to CDX using the User ID provided during registration and the associated Login.gov account.