State file — LA

Underground storage tanks in Louisiana

16,285 registered facilities · 9,317 tanks in service · 5,654 leak records · 594 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).

16,285UST facilities

9,317tanks in service

35,452closed tanks

5,654leak records

594open cases

89%cases closed / NFA

Louisiana runs 19.5 tanks in service per 10,000 residents (population 4,786,046). 5,059 of its 5,654 reported releases have reached No Further Action. The regulator of record is the Louisiana DEQ UST Program, which holds the live registration and case files.

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By parish

Parish	Facilities	Tanks in service	Leak records	Open cases
Acadia Parish	225	138	76	8
Allen Parish	135	66	23	1
Ascension Parish	292	216	106	7
Assumption Parish	95	50	23	1
Avoyelles Parish	266	141	46	11
Beauregard Parish	124	69	44	17
Bienville Parish	104	57	23	4
Bossier Parish	370	194	135	25
Caddo Parish	1,059	508	378	48
Calcasieu Parish	756	503	295	41
Caldwell Parish	62	18	16	0
Cameron Parish	62	26	36	4
Catahoula Parish	51	27	12	2
Claiborne Parish	105	46	23	5
Concordia Parish	88	67	33	2
De Soto Parish	120	50	37	5
East Baton Rouge Parish	1,210	714	536	16
East Carroll Parish	45	16	4	1
East Feliciana Parish	93	49	9	1
Evangeline Parish	177	76	47	12
Franklin Parish	109	59	16	6
Grant Parish	79	34	14	6
Iberia Parish	258	143	91	11
Iberville Parish	163	74	42	3
Jackson Parish	88	45	19	4
Jefferson Parish	962	580	486	19
Jefferson Davis Parish	194	89	57	3
La Salle Parish	95	51	21	3
Lafayette Parish	802	428	291	31
Lafourche Parish	297	196	88	5
Lincoln Parish	217	109	47	3
Livingston Parish	259	252	100	8
Madison Parish	59	52	25	3
Morehouse Parish	153	75	30	5
Natchitoches Parish	263	101	33	4
Orleans Parish	997	456	560	28
Ouachita Parish	621	325	235	29
Plaquemines Parish	96	56	47	1
Pointe Coupee Parish	142	71	23	3
Rapides Parish	640	367	134	20
Red River Parish	64	16	12	1
Richland Parish	119	63	36	8
Sabine Parish	164	62	23	6
St. Bernard Parish	110	91	69	3
St. Charles Parish	157	110	52	3
St. Helena Parish	55	49	11	1
St. James Parish	108	73	19	2
St. John the Baptist Parish	122	96	45	6
St. Landry Parish	425	221	156	12
St. Martin Parish	214	148	85	12
St. Mary Parish	230	118	78	11
St. Tammany Parish	418	343	212	9
Tangipahoa Parish	396	281	121	32
Tensas Parish	27	17	5	0
Terrebonne Parish	406	289	140	6
Union Parish	130	59	25	7
Vermilion Parish	186	98	55	12
Vernon Parish	188	88	39	8
Washington Parish	232	134	37	6
Webster Parish	245	143	83	33
West Baton Rouge Parish	134	102	40	5
West Carroll Parish	57	29	9	1
West Feliciana Parish	51	39	12	0
Winn Parish	114	54	29	4

Frequently asked questions

How many underground storage tanks are in Louisiana?

The EPA UST Finder snapshot lists 16,285 registered UST facilities in Louisiana, with 9,317 tanks in service and 35,452 closed or removed tanks across 64 parishs.

How many tank leaks have been reported in Louisiana?

5,654 releases are on record statewide. 5,059 (89%) were closed with No Further Action; 594 cleanup cases remained open in the snapshot.

Which Louisiana parish has the most underground storage tanks?

By facility count: East Baton Rouge (1,210), Caddo (1,059), Orleans (997), Jefferson (962), Lafayette (802). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.