State file — DC
Underground storage tanks in District of Columbia
1,305 registered facilities · 558 tanks in service · 1,438 leak records · 101 open cleanup cases (EPA UST Finder snapshot, 2018–2021 state data).
District of Columbia runs 8.3 tanks in service per 10,000 residents (population 674,875). 1,337 of its 1,438 reported releases have reached No Further Action. The regulator of record is the DOEE Underground Storage Tank Branch, which holds the live registration and case files.
Check any District of Columbia 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 |
|---|---|---|---|---|
| District of Columbia County | 1,305 | 558 | 1,438 | 101 |
Frequently asked questions
How many underground storage tanks are in District of Columbia?
The EPA UST Finder snapshot lists 1,305 registered UST facilities in District of Columbia, with 558 tanks in service and 3,612 closed or removed tanks across 1 countys.
How many tank leaks have been reported in District of Columbia?
1,438 releases are on record statewide. 1,337 (93%) were closed with No Further Action; 101 cleanup cases remained open in the snapshot.
Which District of Columbia county has the most underground storage tanks?
By facility count: District of Columbia (1,305). Use the county pages for tank and leak detail, or screen any specific address free at https://tankcheckusa.site/.