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#1 Radon Tester, LLC

Derry, Pennsylvania. Laboratory

1 West Virginia state license verified against the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division list, last checked November 3, 2026.

Call #1 Radon Tester, LLC at (724) 774-4535

Credentials

Licenses and certifications

1 credential is on file for this business, exactly as the issuer's list printed it.

These are West Virginia licenses, and the business address is in Pennsylvania.

Radon411 has no Pennsylvania record for this business. Before hiring it for a home in Pennsylvania, check what Pennsylvania asks for. What Pennsylvania requires

West Virginia state license (1)

Issued by the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026.

LicenseNumberStatus on the listExpiresVerifiedCheck with the issuer
Laboratory licenseNo. RL000217West Virginia Radon LabExpires October 31, 2027Verified November 3, 2026Verify RL000217 with the West Virginia Office of Environmental Health Services, Radiation, Toxics and Indoor Air Division (opens in a new tab)

Licensing in Pennsylvania

Pennsylvania's radon program says the state licenses or certifies radon professionals.

Radon Division, Department of Environmental Protection, 800-237-2366.

What Pennsylvania requires, in its program’s own words, and how to check a credential

Local radon figures

Radon in Derry

Derry lies in Westmoreland County, where 34.9% of 1,588 radon tests reported to CDC (2020) were at or above 4 pCi/L, 4.6 points above Pennsylvania pooled (30.3%), 40th of 63 Pennsylvania counties with 30 or more tests.

Radon test figures for the county Derry lies in
CountyTestsAt or above 4 pCi/LMedianPennsylvania, pooledRank in the stateEPA zone
Westmoreland County1,58834.9%2.6 pCi/L30.3%40 of 63Zone 1

Shares of tests people chose to run and report, by county (2020); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.

The counties around Derry

Around Westmoreland County, where Derry lies, the nearest Pennsylvania counties with a CDC figure for 2020 run from 17.4% to 47.6% of tests at or above 4 pCi/L; the closest, Fayette County, is 29 miles away at 17.4%.

The nearest Pennsylvania counties to Westmoreland County with 30 or more tests, 2020
CountyDistanceTestsAt or above 4 pCi/LMedian
Fayette County29 mi28717.4%1.8 pCi/L
Allegheny County29 mi8,33730.5%2.5 pCi/L
Indiana County31 mi22844.3%3.6 pCi/L
Somerset County33 mi12643.7%3.7 pCi/L
Armstrong County35 mi18747.6%3.7 pCi/L
Cambria County42 mi32944.7%3.3 pCi/L

Nearby

Radon professionals nearest Derry

More radon professionals in DerryMore radon professionals in Pennsylvania

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