⏚ UST Check EPA tank registry · per-address screening

UST Check → leak sites → Colorado

Leaking underground storage tanks in Colorado

Leak (LUST) incidents Colorado's tank program has reported to EPA — what is still in cleanup, and what the state has closed. Data vintage 2024-12-04.

8,466leak incidents on record
494cleanups still open
7,972closed — No Further Action
5.8%share still open
2024most recent report

Colorado cities with the most open cleanups

CityLeak incidentsCleanups still open
Denver1,63874
Aurora39940
Lakewood28028
Grand Junction20222
Colorado Springs68618
Pueblo25914
Littleton23114
Wheat Ridge10814
Thornton8411
Westminster10810
Montrose5310
Fort Collins2279
Englewood2199
Loveland1449
Arvada1408
Boulder1847
Broomfield857
Sterling537
Greeley1806
Alamosa446
Walsenburg236
Golden1105
Steamboat Springs515
Lafayette355
Limon345
Evergreen325
Longmont1214
Cortez284
Castle Rock583
Parker383
Silverthorne373
Rifle363
Brush303
Trinidad283
Fruita243
Clifton193
Federal Heights103
Fort Morgan672
Brighton612
Northglenn532

Colorado counties with the most open cleanups

EPA's county rollup. Each county page adds the tank inventory — registered facilities, open and closed tanks.

CountyLeak incidentsCleanups still open
Jefferson 817 65
Denver 1,472 63
Arapahoe 753 59
Adams 719 50
Mesa 280 29
El Paso 780 22
Larimer 441 21
Boulder 368 18
Weld 358 15
Pueblo 282 14
Montrose 66 10
Douglas 157 8
Logan 69 8
Summit 94 7
Broomfield 70 6
Alamosa 50 6
Lincoln 45 6
Huerfano 25 6
Garfield 128 5
Morgan 101 5
Routt 78 5
Fremont 68 5
Montezuma 60 5
Eagle 97 4
Clear Creek 48 4
Otero 47 4
Grand 71 3
Pitkin 63 3
Moffat 44 3
Las Animas 37 3
Teller 35 3
Costilla 17 3
La Plata 87 2
Delta 71 2
Chaffee 61 2
Rio Grande 40 2
Conejos 27 2
Sedgwick 27 2
Cheyenne 10 2
Gunnison 43 1

Most recently reported leaks in Colorado

ReportedSiteCitySubstanceStatus
2024-08-22 Thriftway #274 Ignacio Unknown Petroleum Open
2023-11-09 TBR Service Hesperus Unknown Petroleum No Further Action
2018-09-25 Siegel Oil Co - Retail & Bulk Tanks Denver not reported Open
2018-09-24 South Side Station At Walton Creek Steamboat Springs not reported Open
2018-09-20 B's Auto Englewood not reported Open
2018-09-19 7-Eleven #16712 Loveland not reported Open
2018-09-14 CDOT Denver not reported Open
2018-09-13 Ski Country Shell Frisco not reported Open
2018-09-13 Grand County Dist #2 Granby not reported Open
2018-09-11 Stop N Save #3 Grand Junction not reported Open
2018-09-11 Breckenridge Ski Corp Breckenridge not reported Open
2018-09-07 Water Department Maintenance Facility Pueblo not reported Open
2018-09-06 Union 66/ Kicks 66 Lakewood not reported No Further Action
2018-09-05 29th Street Shell Loveland not reported Open
2018-09-05 J R's Fuel Stop #819 Westcliffe not reported Open
2018-09-05 Loaf'n Jug #12 Berthoud not reported Open
2018-08-29 Stinker Store #313 Denver not reported Open
2018-08-27 Mini Mart/Loaf N Jug #858 Fort Collins not reported Open
2018-08-23 Kum & Go #668 Colorado Springs not reported Open
2018-08-22 TZ Liquor, LLC Canon City not reported Open

Screen a specific Colorado address

State counts set the context; a deal needs the record around one parcel — registered tanks on it, facilities within 500 and 1,500 feet, leak cleanups with status and distance, every line cited to the official record. Same data a Phase I environmental assessment starts from, in your hands before the offer.

Screen an address — $49

Tank inventory for Colorado — registered facilities, open and closed tanks, county by county — is on the Colorado county tables.

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. EPA's LUST layer carries a county field for some states and not others, so city is the primary breakdown here; the county table is EPA's own county rollup.

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