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County file — SD

Underground Storage Tanks in Clark County, SD — 27 facilities, 30 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Clark County, population 3,743.

27UST facilities
21tanks in service
67closed tanks
30leak records
0open cases
30no further action

Clark County has 27 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 21 tanks in service and 67 tanks that have been closed or removed, plus 2 temporarily out of service. Over the life of the program, 30 fuel releases were reported here; 30 (100% 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 56.1 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 Clark County, SD?

The EPA UST Finder snapshot lists 27 registered UST facilities in Clark County with 21 tanks currently in service, 67 closed or removed tanks, and 2 temporarily out of service.

How many fuel leaks have been reported in Clark County?

30 releases from underground storage tanks are on record for Clark County. 30 (100%) reached No Further Action status, while 0 cleanup cases remained open in the snapshot.

How do I check a specific address in Clark County?

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