Very high uranium concentrations of ⁓3000 μgL −1 or more have been found in groundwater held in the granitic aquifers of four villages in eastern Karnataka, India. The highest uranium concentration was 8649 μgL −1 (calculated 218.7 BqL −1 ) and a maximum radon activity of 101.4 BqL −1 . The ingestion doses of uranium for males and females of all age groups are very much higher compared to the corresponding dose calculated for World Health Organization and Atomic Energy Regulatory Board recommended concentrations of 30 and 60 μgL −1 for drinking water. It is therefore recommended that alternative sources for drinking water need to be made to meet United Nations Sustainable Development Goals 3 and 6 to ensure good health from safe drinking water.