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Question Number: 1, Frequent Questions: Electronic Data; States; Tribes

What is CDX?
EPA's Central Data Exchange (CDX) is the Agency's point of entry on the Internet-based Environmental Information Exchange Network (Exchange Network) for environmental data exchanges. CDX provides the capability for states, tribes, and facilities to gain access to their data through the use of Web services. CDX enables EPA to work with stakeholders -- including state, tribal, and local governments and regulated industries -- to facilitate the electronic submission of data to the Agency via the Internet. EPCRA Section 313 covered facilities access TRI-MEweb through CDX to submit annual toxic chemical release reports to EPA and their state or tribe. You can access the electronic reporting site at: