The U.S. EPA Central Data Exchange (CDX) will be performing system maintenance from Friday, July 23, 2021, 6:00 PM ET to Monday, July 26, 2021, 8:00 AM ET. Users of the Exchange Network and CDX Web will experience intermittent service outages during that planned maintenance window. Shared CROMERR Services are not expected to be impacted. Please plan accordingly and schedule any transactions outside of the maintenance window. 

Please direct any questions to the Exchange Network Help Desk:

• Email: [email protected]
   
• Phone: 1-888-890-1995 (Select Option 1 and then Option 5 from the menu) 
  Available 8:00 AM – 6:00 PM Eastern