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[Probabilistic Risk Assessment of Arsenic Exposure Through Drinking Water Intake in Chinese Residents].
Ning Qin1,2, Yun-Wei Liu1, Rong Hou1
1School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Arsenic in China's drinking water poses potential health risks, with groundwater and surface water exceeding safe levels for some residents. Further controls on arsenic concentration are needed to improve drinking water safety.
Area of Science:
- Environmental Science
- Public Health
- Toxicology
Background:
- Arsenic contamination in drinking water is a global health concern.
- Understanding arsenic exposure and its health impacts in China is crucial for public health policy.
Purpose of the Study:
- To assess total arsenic concentrations in Chinese drinking water.
- To evaluate carcinogenic and non-carcinogenic health risks from arsenic exposure.
- To identify high-risk populations and water sources.
Main Methods:
- Systematic literature review to determine arsenic concentrations.
- Regression analysis for drinking water exposure parameter distribution.
- Probabilistic risk assessment for health risk evaluation.
Main Results:
- Geometric mean arsenic concentration was 13.0±38.1 μg·L⁻¹.
- Groundwater and source water exceeded thresholds in 23.2% and 18.4% of cases, respectively.
- Median carcinogenic risk was 3.22×10⁻⁵, with the 18-45 age group at highest risk.
Conclusions:
- Potential health risks from arsenic in drinking water exist for Chinese residents.
- Controlling arsenic levels in drinking water is necessary to mitigate health risks.
- Further research on risk thresholds is recommended for effective public health protection.
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