The Plain English Guide to the Clean Air Act
Contact Information
State and Tribal Contact Information
For more information on state and territorial air
pollution control agencies, visit
www.4cleanair.org 
For more information on tribal air pollution control
agencies, visit
www.epa.gov/air/tribal or
www.ntaatribalair.org
EPA Regional Offices
Region 1
(Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont)
1 Congress Street, Suite 1100
Boston, MA 02114-2023
Phone: 888-372-7341 (Inside Region I)
Phone: 617-918-1111 (Outside Region II)
Web Site: www.epa.gov/region1
Region 2
(New Jersey, New York, Puerto Rico, Virgin Islands)
290 Broadway, 26th Floor
New York, NY 10007-1866
Phone: 212-637-3000
Web Site: www.epa.gov/region2
Region 3
(Delaware, Maryland, Pennsylvania, Virginia, West Virginia, District of Columbia)
1650 Arch Street
Philadelphia, PA 19103-2029
Phone: 800-438-2474 (Inside Region 3)
Phone: 215-814-2100 (Outside Region 3)
Web Site: www.epa.gov/region3
Region 4
(Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee)
Atlanta Federal Center
61 Forsyth Street, SW
Atlanta, GA 30303-3104
Phone: 404-562-9900
Phone: 1-800-241-1754 (Toll-free)
Web Site: www.epa.gov/region4
Region 5
(Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin)
77 W. Jackson Boulevard
Chicago, IL 60604
Phone: 800-621-8431 (Inside Region 5)
Phone: 312-353-2000 (Outside Region 5)
Web Site: www.epa.gov/region5
Region 6
(Arkansas, Louisiana, New Mexico, Oklahoma, Texas)
1445 Ross Avenue, 7th Floor, Suite 1200
Dallas, TX 75202-2733
Phone: 214-665-6444
Web Site: www.epa.gov/region6
Region 7
(Iowa, Kansas, Missouri, Nebraska)
901 N 5th Street
Kansas City, KS 66101
Phone: 800-223-0425 (Toll free)
Phone: 913-551-7003
Web Site: www.epa.gov/region7
Region 8
(Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming)
999 18th Street, Suite 300
Denver, CO 80202-2466
Phone: 800-227-8917 (Inside Region 8)
Phone: 303-312-6312 (Outside Region 8)
Web Site: www.epa.gov/region8
Region 9
(Arizona, California, Hawaii, Nevada, and Pacific Islands, Tribal Nations subject to U.S. law)
75 Hawthorne Street
San Francisco, CA 94105
Phone: 415-744-1500
Web Site: www.epa.gov/region9
Region 10
(Alaska, Idaho, Oregon, Washington)
1200 6th Avenue
Seattle, WA 98101
Phone: 206-553-1200
Web Site: www.epa.gov/region10