Radon in Czech Republic
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. Czech Republic has extensive radon research programs.
Workplaces
Workplaces must not exceed 300 Bq/m³. Czech Republic has long-standing workplace radon monitoring.
Public buildings & schools
Public buildings, especially schools, must comply with 300 Bq/m³ reference level.
New construction
Building code requires radon prevention in new buildings. Czech Republic has detailed radon index mapping.
Professional services
SUJB-Authorized Measurement Services
SUJB-authorized and CAI-accredited (ISO/IEC 17025) radon measurement providers
Accredited by: SUJB
Radon Remediation Companies
Radon remediation companies in a mature market with decades of experience
Radon Consultants
Consultants with expertise in radon risk assessment, building diagnostics and radon index interpretation
CAI-Accredited Laboratories
CAI-accredited laboratories under ISO/IEC 17025 for radon analysis
Accredited by: CAI
How radon is measured in Czech Republic
Each country has its own official measurement protocol. Here is how radon testing works according to the national guidelines.
Measurement method
Alpha-track detectors (passive, year-round)
Minimum duration
At least 6 months (ideally 12 months)
Recommended season
Year-round (annual average for definitive assessment)
Detector placement
All rooms with ground contact, at least 1 detector per room; additional in upper floors
Laboratory requirements
SÚJB-authorised radon laboratory
Reference standard: ČSN ISO 11665 · Atomic Act 263/2016; Radon Programme
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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