Contamination and Health Risk Assessment of Typical Organic Pollutants in the Huaihe River Basin’s Primary Source Water


Jijun Gao*, Linghua Liu, Xiaoru Liu, Qiwen Wang, Laisheng Liu and Tianying Lao

Samples were taken from fifty-one surface source water stations (including reservoirs, rivers, and lakes) in the Huaihe River basin to determine the typical organic pollutant contamination status of the major source water. The samples were tested for 17 different organic contaminants, including benzene homology, chlorobenzene compounds, organophosphorous insecticides, and nitrogenbenzene compounds. The amounts of the 17 chemicals in the fifty-one source water samples were all fewer than the Chinese surface water quality standard’s standard limit levels. The results of the target chemical detection rate revealed that typical organic contaminants have been prevalent in the Huaihe River basin’s source water. The noncarcinogenic risk HQ values of the target compounds were less than one, and the cancer risk values of most source water sites were much lower than the 1 × 10-6; only the cancer risk values of sites 4, 13, 19, 23, 38, and 40 were higher than the 1 × 10-6, indicating that the health risk posed by the target compounds in the majority of source water sites was within acceptable limits.