State file — ME
Underground storage tanks in Maine
5,999 registered facilities · 2,171 tanks in service · 3,097 leak records · 8 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).
Maine runs 15.9 tanks in service per 10,000 residents (population 1,367,209). 3,089 of its 3,097 reported releases have reached No Further Action. The regulator of record is the Maine DEP Storage Tank Program, which holds the live registration and case files.
Check any Maine address
Free screening of every registered tank and reported leak within a mile of any address.
Screen an addressBy county
| County | Facilities | Tanks in service | Leak records | Open cases |
|---|---|---|---|---|
| Androscoggin County | 386 | 169 | 253 | 0 |
| Aroostook County | 746 | 198 | 156 | 0 |
| Cumberland County | 927 | 352 | 669 | 4 |
| Franklin County | 177 | 83 | 83 | 0 |
| Hancock County | 262 | 78 | 118 | 1 |
| Kennebec County | 525 | 189 | 242 | 0 |
| Knox County | 164 | 65 | 94 | 0 |
| Lincoln County | 142 | 58 | 75 | 0 |
| Oxford County | 370 | 110 | 124 | 0 |
| Penobscot County | 713 | 246 | 396 | 1 |
| Piscataquis County | 178 | 47 | 41 | 0 |
| Sagadahoc County | 103 | 57 | 83 | 0 |
| Somerset County | 319 | 127 | 121 | 0 |
| Waldo County | 168 | 60 | 70 | 0 |
| Washington County | 272 | 77 | 118 | 1 |
| York County | 547 | 255 | 454 | 1 |
Frequently asked questions
How many underground storage tanks are in Maine?
The EPA UST Finder snapshot lists 5,999 registered UST facilities in Maine, with 2,171 tanks in service and 13,979 closed or removed tanks across 16 countys.
How many tank leaks have been reported in Maine?
3,097 releases are on record statewide. 3,089 (100%) were closed with No Further Action; 8 cleanup cases remained open in the snapshot.
Which Maine county has the most underground storage tanks?
By facility count: Cumberland (927), Aroostook (746), Penobscot (713), York (547), Kennebec (525). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.