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State file — OR

Underground storage tanks in Oregon

10,669 registered facilities · 5,304 tanks in service · 8,579 leak records · 984 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).

10,669UST facilities
5,304tanks in service
25,676closed tanks
8,579leak records
984open cases
88%cases closed / NFA

Oregon runs 12.9 tanks in service per 10,000 residents (population 4,122,334). 7,581 of its 8,579 reported releases have reached No Further Action. The regulator of record is the Oregon DEQ UST Program, which holds the live registration and case files.

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By county

CountyFacilitiesTanks in serviceLeak recordsOpen cases
Baker County12861555
Benton County1807016315
Clackamas County77041263469
Clatsop County1657411015
Columbia County14750804
Coos County26512716619
Crook County7341453
Curry County100596212
Deschutes County33325520226
Douglas County43927933149
Gilliam County3011133
Grant County6735383
Harney County5815356
Hood River County114637510
Jackson County48832747151
Jefferson County8960482
Josephine County20713717321
Klamath County33413123323
Lake County7327414
Lane County1,004399891107
Lincoln County1877716222
Linn County37218928228
Malheur County1866811017
Marion County77439372589
Morrow County7542292
Multnomah County1,9308621,743141
Polk County1467313213
Sherman County4136222
Tillamook County12741917
Umatilla County39520619935
Union County124587718
Wallowa County5823338
Wasco County137658519
Washington County770438772115
Wheeler County234184
Yamhill County2609623317

Frequently asked questions

How many underground storage tanks are in Oregon?

The EPA UST Finder snapshot lists 10,669 registered UST facilities in Oregon, with 5,304 tanks in service and 25,676 closed or removed tanks across 36 countys.

How many tank leaks have been reported in Oregon?

8,579 releases are on record statewide. 7,581 (88%) were closed with No Further Action; 984 cleanup cases remained open in the snapshot.

Which Oregon county has the most underground storage tanks?

By facility count: Multnomah (1,930), Lane (1,004), Marion (774), Clackamas (770), Washington (770). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.