The role of risk communication in radon mapping, risk assessment and mitigation activities in Sardinia (Italy)

Abstract. In 2014, the Sardinian Regional Department of Hygiene, Health and Social Security promoted the Regional Prevention Plan, which embraced the protection of the population from exposure to indoor pollutants, including radon gas. The programme foresaw: the drafting of “Guidance for the construction/renovation of buildings”; radon monitoring and mapping activities during a dedicated campaign based on geological surveying; a radon health impact assessment; community involvement and a radon risks communication campaign. The objectives of the programme were focused to protect Sardinian population from radon risk, with special reference to vulnerable and susceptible subjects, spread knowledge about risks and the opportunities to reduce them. Using a Health Impact Assessment procedure, the number of attributable deaths was estimated based on radon exposure levels, also visible as preventable events by implementing preventive actions. The purpose of this article is to illustrate the activities carried out, with specific reference to the use of communication to develop each action, to understand strengths and weaknesses and the lessons to be applied in Sardinia and other areas. Monitoring and evaluation results indicate that the health of populations living in radon-exposed areas can be significantly improved by reducing exposure to radon and synergistic risk factors. It is essential to strengthen awareness-raising events using historical and acquired knowledge, and to monitor progress in order to reinforce further actions, as these schemes should be planned for the long term, with central coordination and continuous evaluation. The case of radon risk management and communication in Sardinia offers a number of suggestions and lessons learned, both for the continuation of the work that is expected to be very intense in the coming years, and for the problems that may arise in other regions and countries affected by radon risk.