Health Risk Assessment and Risk Control: Drinking Groundwater in Yinchuan Plain, China

摘要: A preliminary health risk assessment of 25 chemical pollutants was conducted and corresponding control measures were proposed. Evaluation results showed that the mean caused by groundwater consumption 6.343 × 10−5, with 69.9% sampling location exceeding most stringent international standard (10−6). Health owing to inorganic (5.233 × 10−6) greater than those trace organic (2.725 × 10−7). The highest value due carcinogenic primarily arsenic, while greatest non-carcinogenic fluoride. carcinogens (6.585 × 10−5) 2 magnitudes larger (4.858 × 10−7), which indicated primary in drinking groundwater. As major contaminant causing risk, high-arsenic is mainly observed riparian areas near Yellow River front-edge alluvial plains. arsenic content high unstable shallow groundwater, but low stable deep indicates can be controlled improving well completion sealing off Furthermore, pumping quantity must optimised prevent intrusion strengthening management pollution sources quality monitoring warning.