Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

Contact Us About the Great Lakes Initiative (GLI) Clearinghouse

Please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response.

Mailing Address:
U.S. EPA Region 5
77. W. Jackson Blvd.
Mail Code WQ-16J
Chicago, IL 60604

For program questions: David Pfeifer ([email protected]) 312-353-9024
For database questions: Janice Huang ([email protected]) 312-353-8228