Radon in Nagoya
Aichi, Japan
Geological Context
Location and surrounding area
No official radon classification is available for this municipality.
What the regulations require
Dwellings
Japan has not set a national reference level for radon in dwellings. The nationwide survey of 2007-2010 (3,900 homes) measured an average of 14.3 Bq/m³ and estimated that 0.1% of dwellings exceed 100 Bq/m³.
Professional services in Nagoya
Radon Measurement Service Providers
Environmental health companies offering radon testing under general business licenses
Environmental Analysis Laboratories
JNLA or JCSS-accredited laboratories for environmental radiation analysis including radon
Workplace Health & Safety Consultants
Occupational health consultants addressing radon in workplace settings under MHLW guidelines
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.