Town
C-NRPP certified radon testing and mitigation businesses with an office in Gananoque, Ontario, and the 2024 survey figure for its census division, dated.
Photo: Ian Furst, CC BY-SA 3.0, cropped, via Wikimedia Commons.
31.4
%About 1 in 3 properties
Share of properties in the Leeds and Grenville census division, which includes Gananoque, with radon at or above 200 Bq/m³ in the 2024 Cross-Canada Radon Survey. The survey reports no figure for Gananoque itself.
1
Businesses with a business address in Gananoque and at least one active C-NRPP credential, as of 2026-10-18. Providers based elsewhere may also serve Gananoque.
Sorted alphabetically by business name. Every C-NRPP certified business is listed free, and payment never affects the order.
C-NRPP
Service area
Not listed in the registry
Last registry check
Grant
Up to $1,500 toward home radon mitigation. Radon is named as eligible. Current. As of 2026-09-01.
Forgivable loan
Varies by service manager, roughly $15,000 to $25,000. Radon is not named. Varies by service manager. As of 2026-09-18.
Warranty coverage
Up to $50,000 where the Agreement of Purchase and Sale was signed after 1 February 2021, otherwise $15,000. Radon is named as eligible. Current for qualifying homes. As of 2026-09-18.
Free or subsidized testing
Radon is named as eligible. Current. As of 2026-09-18.
Province or territory
Radon by census division, and every certified provider in Ontario.