Austria

Federal Ministry of Agriculture, Forestry, Environment and Water Management, http://www.lebensministerium.at

Belgium

Federal Agency for Nuclear Control (FANC), http://www.fanc.fgov.be

Czech Republic

National Radiation Protection Institute (SURO), http://www.suro.cz/

Denmark

Danish Energy Authority, Ministry of Climate and Energy (ENS), http://www.ens.dk

Finland

Radiation and Nuclear SafetyAuthority, (STUK), http://www.stuk.fi

France

Autorité de Sureté Nucléaire (ASN), http://www.asn.fr
Centre Scientifique et Technique du Bâtiment (CSTB), http://www.cstb.frhttp://ese.cstb.fr/radon
Institut de Radioprotection et de Sûreté Nucléaire (IRSN), http://www.irsn.fr

Germany

The Federal Office for Radiation Protection (BfS), http://www.bfs.de

Greece

Greek Atomic Energy Commission (EEAE), http://www.eeae.gr

Hungary

Hungarian Atomic Energy Authority (HAEA), http://www.haea.gov.hu

Ireland

Radiological Protection Institute of Ireland (RPII), http://www.rpii.ie

Italy

Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), http://www.enea.it

Luxembourg

Service de l’ Energie de l’ Etat (ILNAS), http://www.ilnas.public.lu

Norway

Norwegian Radiation Protection Authority (NRPA), http://www.nrpa.no

Spain

Consejo de Securidad Nuclear (CSN), http://www.csn.es

Sweden

Swedish Radiation Safety Authority (SSM), http://www.stralsakerhetsmyndigheten.se

Other Countries/Organizations

Health Protection Agency, http://www.hpa.org.uk/Topics/Radiation/UnderstandingRadiation/UnderstandingRadiationTopics/Radon/

Federal Office of Public Health of Switzerland, http://www.bag.admin.ch/themen/strahlung/

US Environmental Protection Agency, http://www.epa.gov/radon/

American Association of Radon Scientists and Technologists, http://www.aarst.org/

IAEA International Atomic Energy Agency, http://www.iaea.org/