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RADON411

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Geo Environmental

Philadelphia, Pennsylvania. Testing

1 Pennsylvania state license verified against the Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection list, last checked November 3, 2026.

Credentials

Licenses and certifications

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

Pennsylvania state license (1)

Issued by the Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026. No expiry date is on the record.

LicenseNumberStatus on the listVerifiedCheck with the issuer
Testing licenseNo. 8701DEP certified radon testing firmVerified November 3, 2026Verify 8701 with the Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection (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 Philadelphia

Philadelphia lies in Philadelphia County, where 10.6% of 8,442 radon tests reported to CDC (2020) were at or above 4 pCi/L, 19.7 points below Pennsylvania pooled (30.3%), 63rd of 63 Pennsylvania counties with 30 or more tests.

Radon test figures for the county Philadelphia lies in
CountyTestsAt or above 4 pCi/LMedianPennsylvania, pooledRank in the stateEPA zone
Philadelphia County8,44210.6%1.7 pCi/L30.3%63 of 63Zone 3

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 Philadelphia

Around Philadelphia County, where Philadelphia lies, the nearest Pennsylvania counties with a CDC figure for 2020 run from 14.7% to 39.8% of tests at or above 4 pCi/L; the closest, Delaware County, is 15 miles away at 14.7%.

The nearest Pennsylvania counties to Philadelphia County with 30 or more tests, 2020
CountyDistanceTestsAt or above 4 pCi/LMedian
Delaware County15 mi6,04114.7%1.8 pCi/L
Montgomery County19 mi10,50821.8%2.0 pCi/L
Bucks County23 mi7,06623.2%2.0 pCi/L
Chester County33 mi6,77024.0%2.0 pCi/L
Lehigh County48 mi3,10339.8%2.7 pCi/L
Berks County51 mi2,63239.6%2.9 pCi/L

Nearby

Radon professionals nearest Philadelphia

More radon professionals in PhiladelphiaMore radon professionals in Pennsylvania

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