Radon Standards

Radon Standards have been developed by the International Atomic Energy Agency (IAEA), World Health Organization (WHO) and individual countries.  In Canada, the Radon Action Level has been set by Health Canada and guidelines for radon measurement and mitigation have been developed.

For information on the World Health Organization, see the WHO Handbook on Radon.

For information on the IAEA Standards, see their Fact Sheet for Decision Makers

IAEA Safety Standards on Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards

- this includes Public Exposure due to radon and Exposure in Workplaces

Below are the Radon Action Levels of various organizations:

Organization Becquerel per cubic meter Picocuries per liter
World Health Organization 100 Bq/m³ 2.7 pCi/L
Environmental Protection Agency (USA) 150 Bq/m³ 4.0 pCi/L
Health Canada 200 Bq/m³ 5.4 pCi/L

For more information on International Standards, you can refer to the International Radon Project - Survey on Radon Guidelines Programs and Activities - 2007

For more information on Canadian guidelines:

2006 Report of the Radon Working Group in Canada

Radon Measurements in Residential Dwellings (Homes)


Radon Measurements in Public Buildings 

(Schools, Hospitals, Care Facilities, Detention Centres)


Reducing Radon Levels in Existing Buildings: A Canadian Guide for Professional Contractors


Canadian Guidelines for the Management of Naturally Occurring Radioactive Materials (NORM) 

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