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County file — SD

Underground Storage Tanks in Mellette County, SD — 20 facilities, 20 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Mellette County, population 2,028.

20UST facilities
15tanks in service
39closed tanks
20leak records
0open cases
19no further action

Mellette County has 20 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 15 tanks in service and 39 tanks that have been closed or removed, plus 8 temporarily out of service. Over the life of the program, 20 fuel releases were reported here; 19 (95% of records) were investigated and closed with No Further Action, and no cleanup cases remained open when the snapshot was compiled.

That works out to 74.0 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.

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Frequently asked questions

How many underground storage tanks are in Mellette County, SD?

The EPA UST Finder snapshot lists 20 registered UST facilities in Mellette County with 15 tanks currently in service, 39 closed or removed tanks, and 8 temporarily out of service.

How many fuel leaks have been reported in Mellette County?

20 releases from underground storage tanks are on record for Mellette County. 19 (95%) reached No Further Action status, while 0 cleanup cases remained open in the snapshot.

How do I check a specific address in Mellette County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Mellette 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 Mellette 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

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