Listed for: Testing
Verified:Pennsylvania state license
Call A Harmony Home Inspection, LLC at (412) 657-2191No website listed
ProfessionalsBusiness profile
Crestwood Radon and Environmental
Mountain Top, Pennsylvania. Mitigation
2 Pennsylvania state licenses verified against the Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection list, last checked November 3, 2026.
Credentials
Licenses and certifications
2 credentials are on file for this business, each exactly as the issuer's list printed it.
Pennsylvania state licenses (2)
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.
| License | Number | Status on the list | Verified | Check with the issuer |
|---|---|---|---|---|
| Mitigation license | No. 3720 | DEP certified radon mitigation firm | Verified November 3, 2026 | Verify 3720 with the Pennsylvania Department of Environmental Protection, Bureau of Radiation Protection (opens in a new tab) |
| Mitigation license | No. 3721 | DEP certified radon mitigation firm | Verified November 3, 2026 | Verify 3721 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
Radon figures
Radon in Pennsylvania
CDC publishes radon testing by county, and Mountain Top is not a place its county figures resolve to, so the figures here are Pennsylvania's: pooled across 67 counties, 41.7% of the 203,045 radon tests reported to CDC, 2008 to 2017, laboratory, were at or above 4 pCi/L; 67 counties have 30 or more tests for that period.
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