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State file — MS

Underground storage tanks in Mississippi

11,225 registered facilities · 8,045 tanks in service · 4,084 leak records · 1,756 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).

11,225UST facilities
8,045tanks in service
23,625closed tanks
4,084leak records
1,756open cases
57%cases closed / NFA

Mississippi runs 26.4 tanks in service per 10,000 residents (population 3,044,258). 2,328 of its 4,084 reported releases have reached No Further Action. The regulator of record is the MDEQ UST Branch, which holds the live registration and case files.

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By county

CountyFacilitiesTanks in serviceLeak recordsOpen cases
Adams County203765618
Alcorn County1531014818
Amite County5739227
Attala County116452814
Benton County331282
Bolivar County164842910
Calhoun County6646196
Carroll County4734127
Chickasaw County73432211
Choctaw County4516146
Claiborne County4224159
Clarke County9036244
Clay County10057239
Coahoma County140613313
Copiah County1141124421
Covington County7440219
DeSoto County2643149859
Forrest County2952399747
Franklin County5117142
George County7968146
Greene County3916128
Grenada County133895224
Hancock County101877244
Harrison County512424279131
Hinds County840696483163
Holmes County104582114
Humphreys County5426138
Issaquena County7000
Itawamba County8148188
Jackson County316344217124
Jasper County6758249
Jefferson County4217167
Jefferson Davis County6743229
Jones County3141989234
Kemper County6533156
Lafayette County1231093523
Lamar County1181444824
Lauderdale County46230520062
Lawrence County70242311
Leake County101743213
Lee County36532412042
Leflore County187996227
Lincoln County1541304723
Lowndes County2311879036
Madison County19821110240
Marion County144713411
Marshall County1381003017
Monroe County1921044920
Montgomery County77372312
Neshoba County133933613
Newton County10979349
Noxubee County6833113
Oktibbeha County1221173815
Panola County1901384727
Pearl River County1531056230
Perry County4947249
Pike County1691687535
Pontotoc County97733517
Prentiss County106583217
Quitman County4719158
Rankin County34138617356
Scott County1311023816
Sharkey County4010134
Simpson County128723615
Smith County6517128
Stone County7555197
Sunflower County159783316
Tallahatchie County76362010
Tate County88452212
Tippah County86343115
Tishomingo County91562414
Tunica County5143124
Union County118592815
Walthall County62241710
Warren County1741259651
Washington County2651249133
Wayne County9146217
Webster County5033123
Wilkinson County6021149
Winston County115823517
Yalobusha County6042167
Yazoo County1481054016

Frequently asked questions

How many underground storage tanks are in Mississippi?

The EPA UST Finder snapshot lists 11,225 registered UST facilities in Mississippi, with 8,045 tanks in service and 23,625 closed or removed tanks across 82 countys.

How many tank leaks have been reported in Mississippi?

4,084 releases are on record statewide. 2,328 (57%) were closed with No Further Action; 1,756 cleanup cases remained open in the snapshot.

Which Mississippi county has the most underground storage tanks?

By facility count: Hinds (840), Harrison (512), Lauderdale (462), Lee (365), Rankin (341). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.