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Delmaggio LLC, dba Pillar to Post

Columbus, Ohio. Testing

1 Ohio state license verified against the Ohio Department of Health, Radon Education and Licensing Program list, last checked November 3, 2026.

Call Delmaggio LLC, dba Pillar to Post at (614) 375-0680

Credentials

Licenses and certifications

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

Ohio state license (1)

Issued by the Ohio Department of Health, Radon Education and Licensing Program, not by NRPP or NRSB. Radon411 last checked the list on November 3, 2026.

LicenseNumberStatus on the listExpiresVerifiedCheck with the issuer
Testing licenseNo. RT1532Ohio licensed radon testerExpires April 1, 2028Verified November 3, 2026Verify RT1532 with the Ohio Department of Health, Radon Education and Licensing Program (opens in a new tab)

Licensing in Ohio

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

Radon Education and Licensing Program, Ohio Department of Health, 614-728-0272.

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

Local radon figures

Radon in Columbus

Columbus lies mostly in Franklin County, where 71.9% of 16,142 radon tests reported to CDC (2008 to 2017, laboratory) were at or above 4 pCi/L, 19.6 points above Ohio pooled (52.3%), 6th of 79 Ohio counties with 30 or more tests.

Radon test figures for the counties Columbus lies in
CountyShare of ColumbusTestsAt or above 4 pCi/LMedianOhio, pooledRank in the stateEPA zone
Franklin County97.8%16,14271.9%6.8 pCi/L52.3%6 of 79Zone 1
Delaware County1.5%3,73072.2%6.4 pCi/L52.3%4 of 79Zone 1
Fairfield County0.8%1,17576.8%7.4 pCi/L52.3%2 of 79Zone 1

Shares of tests people chose to run and report, by county (2008 to 2017, laboratory); the state's is its counties' counts added up, calculated by Radon411. Only a test measures a home.

The counties around Columbus

Around Franklin County, one of the counties Columbus lies in, the nearest Ohio counties with a CDC figure for 2008 to 2017, laboratory run from 57.5% to 81.4% of tests at or above 4 pCi/L; the closest, Madison County, is 21 miles away at 67.4%.

The nearest Ohio counties to Franklin County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Madison County21 mi54967.4%5.7 pCi/L
Pickaway County23 mi18381.4%9.5 pCi/L
Licking County29 mi4,69471.2%7.0 pCi/L
Union County30 mi1,28560.2%4.8 pCi/L
Morrow County40 mi17765.0%5.7 pCi/L
Clark County41 mi1,44757.5%4.9 pCi/L

Nearby

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