What is the Action Level for radon?
The Health Protection Agency recommends that radon levels should be reduced in homes where the average is more than 200 becquerels per cubic metre. This recommendation has been endorsed by the Government. This Action Level refers to the annual average concentration in a home, so radon measurements are carried out with two detectors (in a bedroom and living room) over three months, to average out short-term fluctuations. To enable radon initiatives to be targeted effectively, the most radon-prone areas are designated as Affected Areas, defined as those with a greater than 1% chance of a house having radon above the Action Level.
Related Questions
- What should I do if the radon level in my home has been reduced to below the Action Level (200 Bq m-3) but is still above the Target Level (100 Bq m-3)?
- What should I do if the radon level in my home has been reduced but is still above the Action Level (200 Bq m-3)?
- Why have both an Action Level and a Target Level for radon?
