What is Radon?

Radon is a natural radioactive gas. You cannot see, hear, feel or taste it. It comes from the tiny amounts of uranium that occur naturally in all rocks and soils. Radon is present in all parts of the UK, although the gas disperses outdoors so levels are generally very low. Radon is mostly associated with the granite geology of the south west of England, but high levels of radon can be found outside of granite areas.

The Health Protection Agency (HPA) has advised that there should be no indoor radon above the Action Level of 200 becquerels per cubic metre. Most homes in the UK have fairly low radon levels, with an average of about 20 becquerels per cubic metre.