| Country | Activity Concentration Bq/kg | Description | Reference | ||
| K40 | Th232 | U238 | |||
| World Average | 370.00 | 40.00 | 40.00 | [19] | |
| Italy | 442.50 | 32.00 | 56.00 | Albano Terme | [7] |
| Albania | 470.50 | 26.50 | 17.5 | Butrint Lagoon | [18] |
| Turkey | 537.00 | 38.00 | 39.00 | Fatina Valley | [11] |
| India | 384.03 | 46.8 | 70.31 | Ponnaiyar River | [16] |
| Serbia | 445.00 | 36.00 | 42.00 | Danube River | [10] |
| Chana | 379.94 | 6.91 | 7.31 | Tono Irrigation Dam | [17] |
| Saudi Arabia | 416.57 | 5.90 | 11.17 | Jeddah Land Runway | [13] |
| Nigeria | 302.15 | 11.66 | 8.66 | Delta State Rivers | Present Study |