Underground Storage Tanks

With the exception of UST systems located on Indian Lands, states have the primary authority to implement the UST program within their boundaries. For the latest information on the status of the UST programs in the states, click on the applicable state (or Region--in the white numbered circles) below. These links provide state (or Regional) contact information, plus up-to-date data on the UST system universe in each state (or Region) as well as the status of implementing various national program initiatives.

Region 1 - comprised of the states Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.

Region 2 - comprised of the states New Jersey, New York, and the Commonwealth of Puerto Rico and the U.S. Virgin Islands.

Region 3 - comprised of the states Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia.

Region 4 - comprised of the states Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee.

Region 5 - comprised of the states Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin.

Region 6 - comprised of the states Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.

Region 7 - comprised of the states Iowa, Kansas, Missouri, and Nebraska.

Region 8 - comprised of the states Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming.

Region 9 - comprised of the states Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa, and the Commonwealth of the Northern Mariana Islands.

Region 10 - comprised of the states Alaska, Idaho, Oregon, and Washington.

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