Radon testing

Testing your Home

Testing your Workplace

Testing your School

Registered Radon Testing Services

Contact us

On this page you will find out how to test your home, your workplace or your school for radon.

There are a number of companies who provide this service and you can find a list of EPA Registered Radon Testing Services at the bottom of this page.

Radon detectors are small, round, plastic discs about the size of the palm of your hand. You place them as outlined below and leave them for three months before posting them back to the testing service for analysis. Radon detectors are passive detectors, this means that they collect radon automatically, so they simply need to be placed in your home.


A passive radon detector


Testing your home 

Every home has different amounts of radon so even if your neighbours have tested their home for radon, you should still test your home. 

To test your home, you will need two small detectors placed in your home for three months. One detector is placed in a bedroom and the other in a living room - the rooms in the home where you and your family spend most of your time.  

After three-monthsyou send the detectors back to the testing service for analysis and you’ll then receive a report with your results. 

Information on radon in water testing can be found in the householder’s section or in the measurement services section of our website.

Watch our video to see how to test your home for radon. 


What next?

Results below 200 Bq/m3

If your radon results are below 200 Bq/m3 there is no need to re-test unless you carry out major refurbishment work to your home. For example:

  • fitting new windows
  • building an extension
  • insulation or any other work that could possibly open up new entry routes for radon or prevent radon escaping from your home.

We also recommend that you carry out a retest when you move into a new home.

Results above 200 Bq/m3

If your radon results are above 200 Bq/m3, you will need to carry out remediation work to reduce your levels. Once you have completed any remediation work, you should re-test to ensure your levels have reduced to below 200 Bq/m3. This is called a post-remediation test. Please contact us for more information on this free post–remediation test.

If your results were above 200 Bq/m3 and you have carried out remediation work, you should retest every 5 years to check that your radon levels remain low and ensure the remedial work remains effective.


Testing your workplace 

By law employers located in High Radon Areas are required to test their premises for radon. The acceptable level, or Reference Level, for workplaces in Ireland is 300 becquerels per cubic metre (Bq/m3). 

Workplaces must be tested for radon according to the guidelines set out in the EPA Measurement Protocol. You can find a list of EPA Registered Radon Testing Services at the bottom of this page. 

Indoor radon levels vary greatly from one building to another and the measurement from a neighbouring building is no indication of the level of radon in your workplace. 

A workplace is tested by placing one small detector in each occupied room on the ground floor or in the basement. Only rooms that are occupied for more than about 100 hours per year need be measured so you do not need to test bathrooms, corridors, storage areas etc. 

Radon testing in the workplace must be carried out for at least three months. A report with the radon level in each room tested will then be sent to you. More details about testing your workplace for radon are available in the EPA Measurement Protocol 

For underground workplaces such as caves and mines, please contact us for advice.


What next? 

Results below 300 Bq/m3 

If your workplace has radon levels below the national workplace Reference Level (300 Bq/m3), no further action is required unless you carry out major refurbishment work to your premises. For example: 

  • fitting new windows
  • building an extension 
  • insulation or any other work that could possibly open up new entry routes for radon or prevent radon escaping from your premises 

Results above 300 Bq/m3 

If your workplace has radon levels above the national workplace Reference Level (300Bq/m3): 

  • you will need to carry out remediation work to reduce your levels.  
  • you will then need to re-test the rooms that were above 300 Bq/m3 to confirm that the radon levels have been reduced to below this level.
  • remediation work and a post-remediation test should be carried within 12 months of the original test.
  • rooms that originally tested above 300 Bq/m3 should be retested every 5 years.

If your workplace cannot be reduced to below the reference level following remediation work, please contact us for further advice.


Testing your School 

Since schools are workplaces, the national Reference Level for radon in workplaces applies (300 Bq/m3) measured over a three-month period), which is specified by law in the Radiological Protection Act 1991 (Ionising Radiation) Regulations of 2019. Radon levels in all occupied rooms should be less than 300 Bq/m3 

The Department of Education set an advisory Reference Level of 200 Bq/m3 for schools in 1998. This is the same as the Reference Level for radon in homes. These two Reference Levels are applied as follows: 

  • Remediation work is required for any occupied classroom or office where the radon levels are greater than 200 Bq/m3. 
  • Ideally the radon level should be reduced to below 200 Bq/m3. If, after remediation work, it is still between 200Bq/m3 and 300 Bq/m3 (the workplace reference level) then no further remediation work is required. 

A radon test is carried out by placing a small detector in every occupied ground floor classroom and office for three months.  Only rooms that are occupied for more than about 100 hours per year need be measured so you do not need to test corridors, bathrooms or storage areas.  

Please contact the Department of Education who will arrange radon testing in your school.  

The Department of Education will fund testing and any remediation work required. 

When your radon test is complete, and your radon detectors have been analysed, a copy of the results will be sent to both your school and the Department of Education 


What next?  

  • If any room has radon levels above 200 Bq/m3, remediation work should be carried out.  
  • The Department of Education will arrange remediation work in your school. 
  • They will also arrange for post remediation testing in your school. 
  • Rooms that originally tested above 300 Bq/m3 should be retested every 5 years. 

If you carried out remediation work and the radon level remains above the reference level, please contact the EPA for further advice.


Registered radon testing services

This list of registered radon testing services is published by the Environmental Protection Agency to provide information to members of the public and employers. The EPA does not warrant the services being provided by any registered service.

Registered radon testing serviceTelephone numberEmail
All Clear Radon 087-2808492 eugene@allclearradon.ie
Alpha Radon  086-8470449 info@alpharadon.ie
Radon Aware Group 086-2331116 info@radonawaregroup.ie
Radon Ireland 086-2720107 info@radonireland.com
Radonova 0046-709-368-312 info@radonova.org

Listed services have met the relevant criteria required to become a registered radon testing service.

More details about the requirements of this scheme are available in the Registration Form and Guidelines. Listed services have also agreed to comply with the Environmental Protection Agency's Radon in Air Measurement Protocol 


Contact Us

FreePhone: 1800 300 600

Email: radon@epa.ie