THE CONTENT OF SOME NATURAL RADIOACTIVE ELEMENTS, ESPECIALLY ²²²Rn, IN SOME POTABLE WATERS IN SWEDEN

The content of ²²²Rn in drinking water from 118 wells in southeastern Sweden has been measured. The radiation dose from ²²²Rn is completely dominant in comparison with the dose from other nuclides examined. Only bored wells and especially those in granite bedrock have contents exceeding 20 nCi per 1. Dug wells usually have contents less than 2 nCi per 1.