The minimum value of C-14 was lower than that found by the NCS in the case of river water use. New nuclides (e.g., Cl-36) with high contribution to exposure were found in water used for irrigation on the riverbank. The established criteria will result in the selection of a wide range of nuclides that are likely to be selected based on the safety assessment that reflect actual site conditions, which will improve the reliability of safety reviews conducted by the government.