What is the radon reference level ?
How do you quantify radon levels?
The radon activity concentration in the air is measured in Bequerels per cubic meter. A radon test with passive detectors, like those manufactured by Radonova, will display the results in the form of a radon activity concentration in the air in Bq/m³.
What levels are acceptable?
In the UK, workplace regulations establish a level of 300 Bq/m³ as a reference value (UK Ionising Radiations Regulations 2017 or IRR17). If the result of the radon measurement is less or equal to this value, no action is needed.
If the annual average radon concentration is greater than 300 Bq/m³, regulation IRR17 applies. In this case, action is required to reduce radon levels or manage exposures. HSE must also be notified of the result.
In the case of homes, the reference level is 200 Bq/m³. If the radon test shows an annual average radon concentration below 100 Bq/m³, the house does not require remedial measures. If the result is between 100 and 200 Bq/m³, remediation is advised. If the annual average radon concentration is greater than 200 Bq/m³, it will be necessary to remediate the building and then retest.
How to lower radon concentration to an acceptable level?
There are many ways to reduce radon levels, and remember each case is different, a solution that works for one building may not necessarily be effective for another, even if radon levels are similar.
The best way to conduct radon mitigation is to contact a radon mitigation professional who will provide a solution based on that particular case.