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County file — MO

Underground Storage Tanks in St. Charles County, MO — 445 facilities, 190 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for St. Charles County, population 396,448.

445UST facilities
405tanks in service
934closed tanks
190leak records
13open cases
177no further action

St. Charles County has 445 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 405 tanks in service and 934 tanks that have been closed or removed, plus 8 temporarily out of service. Over the life of the program, 190 fuel releases were reported here; 177 (93% of records) were investigated and closed with No Further Action, and 13 of those cleanup cases were still open when the snapshot was compiled.

That works out to 10.2 tanks in service per 10,000 residents, below the Missouri average of 13.3 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 St. Charles County, MO?

The EPA UST Finder snapshot lists 445 registered UST facilities in St. Charles County with 405 tanks currently in service, 934 closed or removed tanks, and 8 temporarily out of service.

How many fuel leaks have been reported in St. Charles County?

190 releases from underground storage tanks are on record for St. Charles County. 177 (93%) reached No Further Action status, while 13 cleanup cases remained open in the snapshot.

How do I check a specific address in St. Charles County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any St. Charles 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 Missouri DNR Tanks Program.

Verify with the state

The live regulatory record for any St. Charles County facility or leak case is held by the Missouri DNR Tanks Program. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Missouri

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