Radon in Italy
Official radon data, regulations and resources
National reference level
300 Bq/m³
Competent authority
ISPRA (Istituto Superiore per la Protezione e la Ricerca Ambientale)
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 300 Bq/m³ for existing dwellings. Mitigation recommended if exceeded.
Workplaces
Reference level 300 Bq/m³ for workplaces. Measurement and mitigation obligations in radon priority areas.
New construction
New buildings (from 2025): reference level 200 Bq/m³. Radon protection measures required in design and construction.
Measurement protocols
Professional services
Qualified Experts in Radon Remediation
Qualified experts for radon remediation defined by D.Lgs. 101/2020, requiring 60-hour qualification course
Accredited by: ISPRA
Accredia-Accredited ISO 17025 Laboratories
Accredia-accredited laboratories for radon concentration measurement under UNI CEI EN ISO/IEC 17025:2018
Accredited by: Accredia
How radon is measured in Italy
Each country has its own official measurement protocol. Here is how radon testing works according to the national guidelines.
Measurement method
Passive nuclear track detectors (CR-39)
Minimum duration
At least 2 consecutive semesters (annual average)
Recommended season
Year-round (two 6-month periods for annual average)
Detector placement
Ground floor and basement rooms, at least 1 detector per floor in contact with ground
Laboratory requirements
Accredited measurement laboratory (Accredia or regional ARPA)
Reference standard: UNI ISO 11665 · D.Lgs. 101/2020
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.
Learn how to testMajor Cities
Rome
2,318,895 inhabitants
Milan
1,371,498 inhabitants
Naples
909,048 inhabitantsHigh (geology estimate)
Turin
847,287 inhabitants
Palermo
648,260 inhabitants
Genoa
580,097 inhabitants
Bologna
394,843 inhabitants
Florence
367,150 inhabitants
Bari
316,491 inhabitants
Catania
311,584 inhabitants
Verona
258,031 inhabitants
Messina
219,948 inhabitants
Trieste
204,338 inhabitants
Padua
203,725 inhabitants
Brescia
200,423 inhabitants
Taranto
198,585 inhabitants
Parma
198,292 inhabitants
Prato
195,089 inhabitants
Modena
184,732 inhabitants
Reggio Calabria
182,455 inhabitants