Each EPA Regional Office is responsible within its states for the execution of the Agency's programs. Learn more about a region by clicking on the links located below the map.

- Region 1 - States of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.
- Region 2 - States of New Jersey, New York, Puerto Rico and the U.S. Virgin Islands.
- Region 3 - States of Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia.
- Region 4 - States of Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee.
- Region 5 - States of Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin.
- Region 6 - States of Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.
- Region 7 - States of Iowa, Kansas, Missouri, and Nebraska.
- Region 8 - States of Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming.
- Region 9 - States of Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa.
- Region 10 - States of Alaska, Idaho, Oregon, and Washington.
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