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County file — WA

Underground Storage Tanks in Lewis County, WA — 365 facilities, 88 leak records

What the EPA UST Finder snapshot (2018–2021 state data) shows for Lewis County, population 77,144.

365UST facilities
195tanks in service
815closed tanks
88leak records
86open cases
2no further action

Lewis County has 365 registered underground storage tank facilities in the national snapshot — gas stations, fleet yards, and other regulated fuel sites — holding 195 tanks in service and 815 tanks that have been closed or removed, plus 8 temporarily out of service. Over the life of the program, 88 fuel releases were reported here; 2 (2% of records) were investigated and closed with No Further Action, and 86 of those cleanup cases were still open when the snapshot was compiled.

That works out to 25.3 tanks in service per 10,000 residents, well above the Washington average of 11.8 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 Lewis County, WA?

The EPA UST Finder snapshot lists 365 registered UST facilities in Lewis County with 195 tanks currently in service, 815 closed or removed tanks, and 8 temporarily out of service.

How many fuel leaks have been reported in Lewis County?

88 releases from underground storage tanks are on record for Lewis County. 2 (2%) reached No Further Action status, while 86 cleanup cases remained open in the snapshot.

How do I check a specific address in Lewis County?

Use the free TankCheck screening at https://tankcheckusa.site/ — paste any Lewis 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 WA Ecology UST Program.

Verify with the state

The live regulatory record for any Lewis County facility or leak case is held by the WA Ecology UST Program. Newer records than this 2018–2021 snapshot may exist.

Nearby countys in Washington

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