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Norwegian Radiation and Nuclear Safety Authority

Radon

'FACTS'

  • Radon is an invisible and odourless radioactive gas.

  • Radon increases the risk of lung cancer.

  • You need to take measurements to find out whether there is radon in your home. 

  • If you have measured radon levels above 100 Bq/m³, you should take steps to reduce the levels.

  • The radon level should not exceed the limit value of 200 Bq/m3.

  • The Radiation Protection Regulations lay down limits on radon in rental accommodation, schools and kindergartens.

How to measure radon

The Norwegian Radiation and Nuclear Safety Authority (DSA) recommends that radon measurements should be performed in all residential dwellings.

'Go to' How to measure radon

Radon mitigation measures

If radon levels of over 100 Bq/m³ have been measured in your residence, radon mitigation measures should be implemented in order to reduce these levels.

Radon in rental accommodation

Are you renting out a house or a flat? If so, you need to measure radon. The Radiation Protection Regulations lay down requirements for radon levels in rental accommodation.

Radon in schools and kindergartens

The Radiation Protection Regulations lay down requirements for radon levels in schools and kindergartens. A radon measurement is the only way to determine whether a building has a radon problem. 

Radon and health risks

According to the World Health Organization (WHO), radon is the most important cause of lung cancer after active smoking. 

What is radon?

Radon is an invisible and odourless radioactive gas which is formed continuously in the Earth’s crust. Outdoors, radon concentrations are normally low, and health hazards only arise when the gas seeps in and builds up in our indoor environment. 

Radon in water

Do you use well water? Then your domestic water could be a source of radon.

'News'

'All news articles'

'Publications'

Strategy for the reduction of radon exposure in norway

Protocol for measurements in schools and kindergartens

StralevernRapport 5:2015 Radon National Action Plan

Recommendations for radon in dwellings in the Nordic countries

'All publications'

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