Radon in São Mamede de Infesta
Porto, Portugal
Geological Context
Location and surrounding area
Estimated radon potential
HighEstimate based on the bedrock under the city (Global Lithological Map): granite-type and acid volcanic rocks carry more uranium. It is not an official classification. Only a measurement gives the radon level of a building.
What the regulations require
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 in São Mamede de Infesta
IPAC-Accredited ISO 17025 Laboratories
IPAC-accredited laboratories for radon detector analysis under ISO/IEC 17025
Radon Measurement Companies
Authorized radon measurement companies under Decreto-Lei 108/2018
Radon Remediation Companies
Radon remediation companies operating under general construction licensing
High Radon Risk Zone - Measurement Recommended
This area has high radon potential. EPA and WHO recommend testing all buildings.
Calculate How Many Detectors You NeedRecommended Radon Detectors
Essential for high-risk areas
Radonova Radtrak³
Passive Detector
Airthings Wave Plus
Continuous Monitor
Pro-Lab Radon Test Kit
Passive Detector
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.
FAQ
What does the radon potential classification mean?▾
The radon potential indicates the likelihood that buildings in this area will have elevated radon levels, based on geological and measurement data from official authorities. It does not predict the level in any individual building.
Is measurement mandatory here?▾
It depends on the national regulations and the type of building. In priority action zones, measurement is often mandatory for workplaces and public buildings. For dwellings, measurement is generally recommended. Check the obligations section above for details specific to this country.
What should I do if the level is above the reference level?▾
If your long-term measurement exceeds the national reference level, mitigation measures such as sub-slab depressurization, sealing or improved ventilation can reduce radon levels significantly. Contact a qualified radon professional.