Radon in New Zealand
Official radon data, regulations and resources
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
New Zealand has not set a national reference level for radon. Health New Zealand points to the WHO recommendation of 100 to 300 Bq/m³ and states that most places in the country are far below it.
Workplaces
Workplaces with radon above the recommended level are advised to reduce exposure, for example by increasing ventilation.
Professional services
IANZ-Accredited Radon Testing Laboratories
IANZ-accredited laboratories under ISO/IEC 17025 for Rn-222 and thoron analysis
Accredited by: IANZ
Environmental Health Consultants
Consultants offering indoor air quality assessment including radon under healthy homes framework
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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