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County file — WI

Underground Storage Tanks in Milwaukee County, WI — 2,929 facilities, 3,942 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Milwaukee County, population 947,960.

2,929UST facilities
1,323tanks in service
8,326closed tanks
3,942leak records
223open cases
3,718no further action

Milwaukee County has 2,929 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 1,323 tanks in service and 8,326 tanks that have been closed or removed, plus 11 temporarily out of service. Over the life of the program, 3,942 fuel releases were reported here; 3,718 (94% of records) were investigated and closed with No Further Action, and 223 of those cleanup cases were still open when the snapshot was compiled.

That works out to 14.0 tanks in service per 10,000 residents, well below the Wisconsin average of 20.7 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 Milwaukee 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.

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Frequently asked questions

How many underground storage tanks are in Milwaukee County, WI?

The EPA UST Finder snapshot lists 2,929 registered UST facilities in Milwaukee County with 1,323 tanks currently in service, 8,326 closed or removed tanks, and 11 temporarily out of service.

How many fuel leaks have been reported in Milwaukee County?

3,942 releases from underground storage tanks are on record for Milwaukee County. 3,718 (94%) reached No Further Action status, while 223 cleanup cases remained open in the snapshot.

How do I check a specific address in Milwaukee County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Milwaukee 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 Wisconsin DATCP Storage Tanks.

Verify with the state

The live regulatory record for any Milwaukee County facility or leak case is held by the Wisconsin DATCP Storage Tanks. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Wisconsin

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