Guelph, ON, Canada

Radon testing in Guelph

Latest credential check on this page: September 14, 2026. Each record carries its own date. Canadian sources and verification.

5 current C-NRPP testing credentials whose official record names Guelph, Ontario. This is partial coverage of professionals with an address in this city, not a list of everyone who serves it.

A C-NRPP certification is not a provincial licence. Confirm the credential and ask whether the professional serves your building before hiring. Check a C-NRPP number.

Name / company	City	C-NRPP credential	Service	Valid through	Last verified
Alexis Thibodeau LEX Scientific Inc.	Guelph	CRT-202618	testing	July 1, 2027	September 14, 2026
Eric Hoffbauer LEX Scientific Inc.	Guelph	CRT-202169	testing	July 1, 2027	September 14, 2026
German Leal LEX Scientific Inc.	Guelph	CRT-201041	testing	July 1, 2027	September 14, 2026
Isabel Rewucki LEX Scientific Inc.	Guelph	CRT-202889	testing	July 1, 2028	September 14, 2026
Isabelle Wirz LEX Scientific Inc.	Guelph	CRT-202428	testing	July 1, 2027	September 14, 2026

Fig. 1 — Guelph, approximate. Pin marks the official Canadian Geographical Names Database city reference point, not a business address or service area.

Map source: Natural Resources Canada — Guelph. Contains information licensed under the Open Government Licence – Canada.