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State file — OH

Underground storage tanks in Ohio

24,534 registered facilities · 20,124 tanks in service · 34,212 leak records · 2,044 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).

24,534UST facilities
20,124tanks in service
52,951closed tanks
34,212leak records
2,044open cases
94%cases closed / NFA

Ohio runs 17.1 tanks in service per 10,000 residents (population 11,755,535). 32,165 of its 34,212 reported releases have reached No Further Action. The regulator of record is the Ohio BUSTR (State Fire Marshal), which holds the live registration and case files.

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By county

CountyFacilitiesTanks in serviceLeak recordsOpen cases
Adams County876210511
Allen County27821342820
Ashland County1439123316
Ashtabula County30321539535
Athens County13312116912
Auglaize County10710414820
Belmont County20720427622
Brown County1099812115
Butler County62251882837
Carroll County921001206
Champaign County876512413
Clark County30824143731
Clermont County34233743020
Clinton County10512213212
Columbiana County22418632023
Coshocton County109581378
Crawford County1299916514
Cuyahoga County2,7821,9403,869214
Darke County13110817513
Defiance County114981493
Delaware County18820824923
Erie County2671973446
Fairfield County20718626617
Fayette County701079211
Franklin County1,8871,5772,676104
Fulton County136911616
Gallia County9510312311
Geauga County16814723518
Greene County23323529823
Guernsey County13712918711
Hamilton County1,6611,1502,364155
Hancock County16314526710
Hardin County6968855
Harrison County886010611
Henry County92921056
Highland County1021031268
Hocking County851141095
Holmes County93501285
Huron County19912528116
Jackson County859710011
Jefferson County22217725122
Knox County1361651655
Lake County40736657234
Lawrence County1161111409
Licking County30728641116
Logan County99971345
Lorain County53844679246
Lucas County9438111,43276
Madison County899114013
Mahoning County53041975340
Marion County1419020914
Medina County28727143232
Meigs County89839812
Mercer County96941042
Miami County21122730326
Monroe County5051626
Montgomery County1,1039801,68874
Morgan County3836554
Morrow County6469874
Muskingum County24118933220
Noble County3837472
Ottawa County16612823317
Paulding County52496711
Perry County79669610
Pickaway County1281411557
Pike County83961053
Portage County30121642323
Preble County9911915327
Putnam County7982957
Richland County31320946827
Ross County1941942369
Sandusky County15013921810
Scioto County21018725620
Seneca County15212819822
Shelby County1251211704
Stark County8444851,25060
Summit County1,0767321,634125
Trumbull County49339266430
Tuscarawas County31322041426
Union County961181336
Van Wert County6851939
Vinton County5637583
Warren County30730141242
Washington County21915726811
Wayne County26119942923
Williams County12111316111
Wood County29933746624
Wyandot County6847878

Frequently asked questions

How many underground storage tanks are in Ohio?

The EPA UST Finder snapshot lists 24,534 registered UST facilities in Ohio, with 20,124 tanks in service and 52,951 closed or removed tanks across 88 countys.

How many tank leaks have been reported in Ohio?

34,212 releases are on record statewide. 32,165 (94%) were closed with No Further Action; 2,044 cleanup cases remained open in the snapshot.

Which Ohio county has the most underground storage tanks?

By facility count: Cuyahoga (2,782), Franklin (1,887), Hamilton (1,661), Montgomery (1,103), Summit (1,076). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.