Underground storage tanks in the United States

EPA UST Finder national registry — every state-reported tank facility and leak incident, aggregated by EPA to the county level. Data vintage 2024-12-04.

741,447registered facilities

502,905open tanks

1,739,023closed tanks

530,062leak incidents on record

69,986cleanups still open

By state

State	Counties	Facilities	Open tanks	Closed tanks	Leak incidents	Open cleanups
Alaska	29	2,597	821	5,902	2,099	256
Alabama	67	15,923	12,017	32,296	5,106	978
Arkansas	75	10,772	6,615	22,549	1,334	117
Arizona	15	10,121	6,023	23,841	9,330	469
California	58	13,588	37,630	143	41,677	2,260
Colorado	64	11,328	6,985	24,228	8,481	493
Connecticut	8	9,356	5,192	30,508	2,273	874
District of Columbia	1	1,305	558	3,612	1,438	101
Delaware	3	2,915	1,180	8,164	4,965	111
Florida	67	38,194	20,503	104,910	34,554	10,168
Georgia	159	24,573	25,832	50,517	17,921	1,075
Hawaii	5	2,563	1,334	5,230	1,393	77
Iowa	99	13,223	7,123	30,050	6,331	555
Idaho	44	5,498	3,225	12,022	1,576	67
Illinois	102	28,236	17,907	66,419	25,334	5,924
Indiana	92	17,730	12,794	44,112	9,987	1,851
Kansas	105	9,337	5,598	21,353	11,343	1,486
Kentucky	120	16,761	9,494	41,361	13,104	0
Louisiana	64	16,285	9,317	35,452	5,654	594
Massachusetts	14	10,528	8,321	27,787	5,331	419
Maryland	24	12,656	7,203	39,871	12,329	79
Maine	16	5,999	2,171	13,979	3,097	8
Michigan	83	27,944	16,828	73,465	23,450	8,674
Minnesota	87	14,357	10,810	34,911	11,582	418
Missouri	115	14,550	8,215	32,983	6,872	695
Mississippi	82	11,225	8,045	23,625	4,084	1,756
Montana	56	6,136	3,275	13,611	4,844	1,027
North Carolina	100	28,734	22,412	66,926	23,567	6,063
North Dakota	53	3,620	2,564	8,288	1,047	57
Nebraska	93	2,194	5,122	1,024	8,721	871
New Hampshire	10	4,636	2,695	12,656	2,419	594
New Jersey	21	23,144	12,186	77,464	16,783	4,663
New Mexico	33	6,062	2,945	13,622	2,855	937
Nevada	17	4,200	3,726	8,201	2,406	167
New York	62	33,631	23,488	98,195	25,802	656
Ohio	88	24,534	20,124	52,951	34,212	2,044
Oklahoma	77	13,597	8,137	29,139	4,124	351
Oregon	36	10,669	5,304	25,676	8,579	984
Pennsylvania	67	32,435	20,512	77,775	17,487	1,775
Puerto Rico	78	1,655	0	0	598	329
Rhode Island	5	3,386	1,292	9,520	2,077	225
South Carolina	46	15,284	10,294	35,707	10,125	2,270
South Dakota	66	3,357	2,889	7,602	4,082	196
Tennessee	95	19,058	12,526	40,911	13,821	155
Texas	254	61,249	42,982	123,784	27,948	1,356
Utah	29	6,202	3,954	14,279	4,847	286
Virginia	133	24,529	16,570	60,917	12,140	323
Vermont	14	3,520	1,873	9,124	2,169	601
Washington	39	16,732	8,601	39,919	2,983	2,730
Wisconsin	72	32,827	12,084	71,878	20,472	921
West Virginia	55	8,733	3,763	22,006	3,693	556
Wyoming	23	3,759	1,846	8,558	1,616	344

This is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.

source: EPA UST Finder EPA data vintage 2024-12-04