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Potential exceedance of the reference value of radon concentration in buildings? Radon map (FOPH)

Radon is a naturally occurring, radioactive noble gas, which can seep into buildings through the ground. Switzerland is particularly affected by this problem due to its geology. The radon map indicates the probability (in %) of exceeding the reference value of the radon concentration of 300 Bq/m3 in a building.

29.04.2021 | www.geo.admin.ch

ch.bag.radonkarte

Link to the map: map.geo.admin.ch

However, only a measurement can determine the radon concentration in a specific, existing building. The list of approved measuring services is available at www.ch-radon.ch. Recommendations regarding protective measures against radon in new constructions are currently being drawn up. The confidence index (high, medium, low, very low) indicates the reliability of the estimated probability.

Further information on the topic of radon: Webseite FOPH

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geo.admin.ch

c/o
Federal Office of Topography swisstopo
COGIS (Coordination, Geo-Information and Services)
Seftigenstrasse 264
P.O. Box
3084 Wabern