Abstract: To further understand the impact of nuclear power plant operation on the total radioactivity levels in surrounding drinking water, gross α and gross β in drinking water samples were collected and analyzed near Daya Bay nuclear power station from 2021 to 2023. Following the technical specifications for radiation environmental monitoring, quarterly monitoring was conducted at three sampling sites (Urban Inns, Pengcheng and Shenzhen city) and one control site (Fogang). The measured activity concentrations ranged from 0.004 to 0.033 Bq/L for gross α and 0.020 to 0.150 Bq/L for gross β. These results demonstrate that the radioactivity levels in drinking water around Daya Bay nuclear power station were all below the guidance limits specified in the current standards for drinking water quality.

Key words: Daya Bay nuclear power station, drinking water, gross α, gross β