County file — SD
Underground Storage Tanks in Dewey County, SD — 52 facilities, 61 leak records
What the EPA UST Finder snapshot (2018–2021 state data) shows for Dewey County, population 5,559.
Dewey County has 52 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 34 tanks in service and 142 tanks that have been closed or removed, plus 3 temporarily out of service. Over the life of the program, 61 fuel releases were reported here; 28 (46% of records) were investigated and closed with No Further Action, and 5 of those cleanup cases were still open when the snapshot was compiled.
That works out to 61.2 tanks in service per 10,000 residents, well above the South Dakota average of 32.8 per 10,000. Countywide numbers are context, not a verdict on any parcel — tank risk is hyper-local, falling off within a few hundred feet.
Check any address in Dewey County
Paste an address to map every registered tank and reported leak within a mile — distances in feet, cleanup statuses, and an A–F screening grade. Free, no login.
Screen an addressFrequently asked questions
How many underground storage tanks are in Dewey County, SD?
The EPA UST Finder snapshot lists 52 registered UST facilities in Dewey County with 34 tanks currently in service, 142 closed or removed tanks, and 3 temporarily out of service.
How many fuel leaks have been reported in Dewey County?
61 releases from underground storage tanks are on record for Dewey County. 28 (46%) reached No Further Action status, while 5 cleanup cases remained open in the snapshot.
How do I check a specific address in Dewey County?
Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Dewey County address to map every registered tank and reported leak within a mile, with distances in feet and an A–F screening grade. Verify current records with the SD DANR Tanks & Spills.
Verify with the state
The live regulatory record for any Dewey County facility or leak case is held by the SD DANR Tanks & Spills. Newer records than this 2018–2021 snapshot may exist.
Nearby countys in South Dakota
- Corson County 60 fac · 45 leaks
- Custer County 35 fac · 54 leaks
- Davison County 79 fac · 91 leaks
- Day County 46 fac · 69 leaks
- Deuel County 22 fac · 37 leaks
- Douglas County 23 fac · 28 leaks
- Edmunds County 28 fac · 35 leaks
- Fall River County 38 fac · 60 leaks
- Faulk County 16 fac · 37 leaks
- Grant County 34 fac · 47 leaks