Radon

Information

Radon is a naturally occurring radioactive gas which is formed by the decay of small amounts of uranium found in all soils and rocks. Radon released from rocks and soils is quickly diluted in the atmosphere. Concentrations in the open air are normally very low and do not present a hazard. Radon that enters poorly ventilated enclosed spaces such as some basements, buildings, caves, mines, and tunnels may reach unacceptably high concentrations in some circumstances. Radon levels in individual buildings can be influenced by the construction method and the amount of ventilation provided. A person's exposure to radon will also vary according to how particular buildings and spaces are used.

Radon decays to minute radioactive particles which can be breathed in and can lodge in the lining of the lungs. Inhalation of the radioactive decay products of radon gas is believed to increase the chance of developing lung cancer. If individuals are exposed to high concentrations for significant periods of time, there may be cause for concern.

Should you be concerned?

Radon is only harmful when trapped in areas of poor ventilation. Radon is also only prevalent in certain areas of the country ' as indicated by the map, where the green areas are below the action level, and in other isolated pockets throughout the country which are more difficult to identify. The map shows the variation in number of houses likely to be above the Government's "action level".

The Radon data is provided to Sitescope Limited by the Health Protection Agency (HPA) and covers England and Wales only.