Radon Testing CompaniesRhode Island file — RI RIDOH
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Chapter 04 — The Rhode Island file

Radon testing & mitigation in Rhode Island

Current RI RIDOH credentials from the official Rhode Island roster. We group people by the city on that file. We do not invent neighborhoods. Source: RI RIDOH.

Latest credential check August 29, 2026. Methodology Individual record dates may be earlier.

32current listings
26testing
6mitigation
Fig. 4 — 25 of 32 current listings are mapped. 7 records have no mappable in-state place. Each pin is a current listing at the Census city or county centroid on the file, approximate. Pins that share a place are spread so you can click them. Not street addresses.

§ 4.1

Cities with listings

A city appears only when at least one current listing serves it.

§ 4.3

How to verify a radon credential in Rhode Island

RI RIDOH licenses radon work in Rhode Island and publishes a list we import monthly. Match the name and credential number on the official page before you hire.

Official RI RIDOH verification page · All fifty states · reviewed September 8, 2026

§ 4.4

Questions about radon credentials in Rhode Island

Does Rhode Island license radon testers and mitigators?

RI RIDOH licenses radon work in Rhode Island and publishes a current list with credential numbers. This site imports that list and re-checks it monthly. 32 current Rhode Island listings appear here as of August 29, 2026.

How do I verify a radon credential in Rhode Island?

Open the RI RIDOH lookup at https://datahealth.ri.gov/find/radon/, search the name, and match the credential number digit for digit. Status can change between our monthly check on August 29, 2026 and the day you hire. If the official page disagrees with this directory, the official page is right.

Is an NRPP or NRSB certification enough in Rhode Island?

Rhode Island issues its own radon credential through RI RIDOH, so a national NRPP or NRSB certification is not a substitute for it. Every Rhode Island listing on this site shows the RI RIDOH number, not a national one.