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County file — SD

Underground Storage Tanks in Pennington County, SD — 319 facilities, 376 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Pennington County, population 112,158.

319UST facilities
295tanks in service
682closed tanks
376leak records
16open cases
360no further action

Pennington County has 319 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 295 tanks in service and 682 tanks that have been closed or removed, plus 4 temporarily out of service. Over the life of the program, 376 fuel releases were reported here; 360 (96% of records) were investigated and closed with No Further Action, and 16 of those cleanup cases were still open when the snapshot was compiled.

That works out to 26.3 tanks in service per 10,000 residents, below 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 Pennington County, SD?

The EPA UST Finder snapshot lists 319 registered UST facilities in Pennington County with 295 tanks currently in service, 682 closed or removed tanks, and 4 temporarily out of service.

How many fuel leaks have been reported in Pennington County?

376 releases from underground storage tanks are on record for Pennington County. 360 (96%) reached No Further Action status, while 16 cleanup cases remained open in the snapshot.

How do I check a specific address in Pennington County?

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