In a survey on uranium and 226Ra concentrations in water distributed by Finnish waterworks, 548 samples were analysed that covered drinking water networks servicing 84% of all consumers. Among all consumers, the mean and median uranium concentrations at the point of use were 0.58 and 0.15 μg L–1. The mean uranium concentration in drinking water produced from groundwater was 0.88 μg L–1, and when surface water was used in production the mean concentration was only 0.15 μg L–1. 226Ra concentrations were generally below our detection limit of 0.01 Bq L–1. The annual effective doses to the public arising from these radionuclides were only a few microsieverts, and the 0.1 mSv limit laid down in the EU Drinking Water Directive was not exceeded in any of the studied water distribution networks.