§ 4.1 — Rhode Island
This page lists 25 people and firms with a current radon testing credential whose official record names Rhode Island. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was October 13, 2026; other records may have been checked earlier. Source: RI RIDOH. Verify the number before you hire.
Testing listings are people credentialed to measure radon. Mitigation listings are people credentialed to install a reduction system. Some people appear on both lists when the official file says they hold both. The list is ordered by the city or county on each record. That place is where the record is filed, not a promise about where the person works.
current RI RIDOH № RTB00110
current RI RIDOH № RTB00057
current RI RIDOH № RTB00016
current RI RIDOH № RTB00136
current RI RIDOH № RTB00112
current RI RIDOH № RTB00115
current RI RIDOH № RTB00139
current RI RIDOH № RTB00124
current RI RIDOH № RTB00103
current RI RIDOH № RTB00060
current RI RIDOH № RTB00105
current RI RIDOH № RTB00084
current RI RIDOH № RTB00130
current RI RIDOH № RTB00123
current RI RIDOH № RTB00054
current RI RIDOH № RTB00096
current RI RIDOH № RTB00132
current RI RIDOH № RTB00100
current RI RIDOH № RTB00135
current RI RIDOH № RTB00138
current RI RIDOH № RTB00101
current RI RIDOH № RTB00094
current RI RIDOH № RTB00077
current RI RIDOH № RTB00082
current RI RIDOH № RTB00089
Appendix A
Open the source link on this page and match the name and credential number to RI RIDOH. Status can change after a record’s verification date. The latest record check on this page was October 13, 2026; check each record’s date. If the official page disagrees with this directory, trust the official page. We do not invent credential numbers.
The U.S. EPA does not certify radon contractors. EPA publishes guidance on finding a qualified radon service provider and points to state programs and national certifications. This directory is not affiliated with EPA. We do not display EPA-certified badges.
Last verified on an individual record is the date we checked its official source. The latest credential check on this page was October 13, 2026; other records may have earlier dates. We refresh the roster monthly. Current means the person appeared as currently credentialed on the source at that record’s verification date. Credentials can expire between refreshes, so follow the source link.
Appendix A.2
The full checklist: Certified radon tester: what they do and how to hire one
Rhode Island Department of Health licenses radon testing businesses and mitigation contractors. The firms below appear on the official RIDOH Find Radon Licensees listing we imported. Laboratories are not listed here. Read the methodology. Credential status can change.