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State Designations

Areas Designated under the 1997 Air Quality Standards

The following map groups the states by their associated EPA regional office. Click on a region in the map or list below to view EPA's final designations.

Map of the US, split into EPA regions Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont Region 2: New Jersey, New York, Puerto Rico, US Virgin Islands Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin Region 6: Arkansas, Louisiana, New Mexico, Oklahoma, Texas Region 7: Iowa, Kansas, Missouri, Nebraska Region 8: Colorado, Montana, North Dakota, South Dakaota, Utah, Wyoming Region 9: Arizona, California, Hawaii, Nevada, Pacific Islands Region 10: Alaska, Idaho, Oregon, Washington


Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont and Tribal Nations

Region 2: New Jersey, New York, Puerto Rico, US Virgin Islands and Tribal Nations

Region 3: Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia

Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee and Tribal Nations

Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin and Tribal Nations

Region 6: Louisiana, Arkansas, Oklahoma, New Mexico, Texas and Tribal Nations

Region 7: Iowa, Kansas, Missouri, Nebraska, and Tribal Nations

Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, Wyoming and Tribal Nations

Region 9: Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations

Region 10: Alaska, Idaho, Oregon, Washington and Tribal Nations

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