Why has Health Canada announced in June 2007 a lowering of the guidelines for acceptable levels of radon in the home from 800 to 200 Bq/m³?
A. Previously our estimates of lung cancer risk from radon were based on studies of underground uranium miners exposed to high levels of radon. Uncertainty existed with the projection of lung cancer risk from occupational radon exposure to the public for residential exposures. Health Canada’s previous guideline had been in place since 1988. Recent scientific studies have conclusively linked the risk of developing lung cancer to levels of radon found in some homes. These studies prompted the federal government to collaborate with provincial and territorial governments to review the federal radon guidelines in 2005. Following a risk assessment and a public consultation, the revised guideline was approved by the Federal Provincial Territorial Radiation Protection Committee in October 2006. Our new guideline of 200 Bq/m³ makes Canada better than or equal to most every other major industrialized country.
Related Questions
- Why has Health Canada announced in June 2007 a lowering of the guidelines for acceptable levels of radon in the home from 800 to 200 Bq/m³?
- What is Health Canadas reaction to the World Health Organizations (WHO) proposal for radon reference levels to be set at 100 Bq/m³?
- Does Health Canada know how many homes on reserve may have radon levels that exceed the guideline?
