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Greco and Haines, Inc.

Radon professional based in Derby, Naugatuck Valley Planning Region, CT

Contact on the state list	Bill Ainsworth
Certificate or license number	NHC.0001055; PLM.0286129-J1 (Joseph Vicidomino)
Listed as	Radon Measurement and Mitigation Professional
Status	Nationally certified, on the Connecticut DPH list; the list is not an endorsement
Based in	Derby, Naugatuck Valley Planning Region, Connecticut

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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 Connecticut DPH radon measurement and mitigation professional lists, last checked 2026-11-02. See the issuing agency.

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