Underground storage tanks in Montana

EPA UST Finder county aggregates for Montana — registered tank facilities and leak (LUST) incidents as reported by the state program to EPA.

6,136registered facilities

3,275open tanks

13,611closed tanks

4,844leak incidents

1,027cleanups still open

By county

County	Facilities	Open tanks	Closed tanks	Leak incidents	Open cleanups
Yellowstone	540	361	1,261	472	151
Missoula	403	269	896	314	22
Cascade	360	229	749	323	83
Flathead	314	239	653	273	63
Gallatin	302	221	655	222	18
Lewis and Clark	283	140	603	236	52
Lake	224	152	586	200	36
Roosevelt	184	77	396	129	37
Silver Bow	176	115	436	97	25
Fergus	166	106	340	113	22
Glacier	155	75	438	122	26
Hill	153	42	312	130	47
Park	148	64	351	99	6
Valley	143	39	342	110	36
Big Horn	137	78	330	112	30
Lincoln	134	78	320	148	6
Chouteau	121	30	214	63	15
Sanders	116	45	267	89	6
Richland	112	46	251	66	16
Pondera	108	25	195	71	16
Ravalli	103	63	240	80	—
Toole	99	26	181	68	14
Sheridan	89	24	159	48	4
Teton	89	44	169	50	10
Dawson	85	37	186	87	33
Beaverhead	79	45	175	80	6
Rosebud	79	37	224	86	34
Custer	78	47	210	72	27
Madison	78	35	153	73	14
Carbon	74	28	189	57	10
Blaine	66	32	124	48	16
Deer Lodge	65	19	159	32	3
Judith Basin	62	38	103	43	7
Phillips	61	29	119	40	18
Powell	58	19	126	34	2
Mineral	57	33	126	57	1
Broadwater	54	25	113	45	11
Jefferson	54	28	124	60	7
Wheatland	54	31	119	26	9
Stillwater	51	41	113	56	16
Musselshell	46	15	104	26	5
Fallon	43	22	82	26	9
Sweet Grass	39	15	94	33	2
Daniels	38	8	68	35	3
Granite	37	12	99	26	4
Liberty	36	9	70	22	6
McCone	32	21	63	19	3
Meagher	27	11	55	18	6
Powder River	24	12	51	27	8
Prairie	21	6	48	22	6
Carter	19	9	46	13	7
Garfield	17	6	35	12	4
Treasure	17	5	31	10	4
Golden Valley	9	0	20	8	1
Petroleum	9	0	17	8	3
Wibaux	8	12	21	8	1

Screen a specific property in Montana

County numbers set the context; a deal needs the registry around one address — registered tanks at the parcel, facilities within 500/1,500 ft, leak cleanups with status and distance, every line cited to the official record.

Screen an address — $49

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