Notes: The Italian legislation on radon in drinking water is within the Legislative Decree 28/2016, which transposed the European Directive 2013/59/Euratom. More detailed requirements are included in the Decree of the Minister of Heal of 2 August 2017. A parameter value of 100 Bq/L and a reference level of 1000 Bq/m3 have been established. Lead agency: Ministry of Health and the Istituto Superiore di Sanità (Italian National Institute of Health). Website: 1) <<https://www.gazzettaufficiale.it/eli/id/2016/03/07/16G00036/sg>>  and  2) <<https://www.iss.it/documents/20126/0/DM_2_08_2017.pdf>>