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Planet Radon

Radon professional based in Northborough, Worcester County, MA

Contact on the state list	Eric Janssen
Listed as	Radon Measurement Professional
Status	NRPP certified, on the Massachusetts DPH list; Massachusetts does not certify radon professionals
Based in	Northborough, Worcester County, Massachusetts

"Based in" is the city and county of the address on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

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We publish these details as they appear on the state list. Being on it is not a state license, and we do not vouch for the business. Before hiring, ask to see a current radon certification and a current certificate of insurance.

Checked against Massachusetts DPH lists of nationally certified radon professionals, last checked 2026-11-02. See the issuing agency.

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