Radon in Portugal
Official radon data, regulations and resources
National reference level
300 Bq/m³
Competent authority
What should you do?
Regardless of the official classification, the only way to know the radon level in a specific building is to measure it. A long-term test (at least 3 months) is recommended. You can either test yourself with passive detectors or hire a certified professional.
Regulations & obligations
Dwellings
Reference level of 300 Bq/m³ as per EU Directive 2013/59/Euratom, transposed by Decreto-Lei n.º 108/2018.
Workplaces
Workplaces must not exceed 300 Bq/m³ annual average concentration.
Public buildings & schools
Public buildings should comply with 300 Bq/m³ reference level.
New construction
New buildings must incorporate radon prevention measures in high-risk areas.
Professional services
IPAC-Accredited ISO 17025 Laboratories
IPAC-accredited laboratories for radon detector analysis under ISO/IEC 17025
Accredited by: IPAC
Radon Measurement Companies
Authorized radon measurement companies under Decreto-Lei 108/2018
Accredited by: DGS
Radon Remediation Companies
Radon remediation companies operating under general construction licensing
How to test for radon yourself
Regardless of where you live, testing for radon is easy and affordable. A long-term measurement with passive detectors is the most reliable way to know your indoor radon level.
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