Environmental Chemistry

ISSN 0254-6108

CN 11-1844/X

Vol. 38 No. 5
May  2019
Article Contents

Citation:

Water quality health risk assessment in a drinking water source in southeast coastal area of China

  • Received Date: 2018-10-21
    Fund Project:

    Supported by the National Natural Science Foundation of China (41601554, 41807495)and Natural Science Foundation of Zhejiang Province(LQ16C030004).

  • Drinking water quality is of great concern to the public as it directly affects human health.Taking a representative drinking water source (Reservoir A and Reservoir B) in the southeast coastal area of China as the study area, and using the water quality data during 2007-2016, this paper assessed human health risks using the US EPA health-based risk assessment model. Results showed that, the total health risks for adult of Reservoir A and Reservoir B were 3.21×10-5 a-1 and 3.26×10-5 a-1(Risk level Ⅱ, at low-moderate level),while for children were 1.05×10-4 a-1 and 1.07×10-4 a-1(Risk level Ⅳ, at moderate-high level), respectively. The total human health risk includes carcinogenic risk and non-carcinogenic risk, while the former was about 3-4 orders of magnitude higher than the later. The major carcinogenic contaminants in this drinking water source were As, Cd and Cr6+, in which Cr6+ and As were the key carcinogenic contaminants that accounted for 98% of the carcinogenic risk. During 2007-2016, the health risks to both adult and children in Reservoir B showed significant increasing trends.
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Water quality health risk assessment in a drinking water source in southeast coastal area of China

  • 1. School of Public Health and Management, Wenzhou Medical University, Wenzhou, 325035, China;
  • 2. Southern Zhejiang Water Research Institute(iWATER), Wenzhou Medical University, Wenzhou, 325035, China;
  • 3. Key Laboratory of Watershed Environmental Science and Health of Zhejiang Province, Wenzhou, 325035, China
Fund Project:  Supported by the National Natural Science Foundation of China (41601554, 41807495)and Natural Science Foundation of Zhejiang Province(LQ16C030004).

Abstract: Drinking water quality is of great concern to the public as it directly affects human health.Taking a representative drinking water source (Reservoir A and Reservoir B) in the southeast coastal area of China as the study area, and using the water quality data during 2007-2016, this paper assessed human health risks using the US EPA health-based risk assessment model. Results showed that, the total health risks for adult of Reservoir A and Reservoir B were 3.21×10-5 a-1 and 3.26×10-5 a-1(Risk level Ⅱ, at low-moderate level),while for children were 1.05×10-4 a-1 and 1.07×10-4 a-1(Risk level Ⅳ, at moderate-high level), respectively. The total human health risk includes carcinogenic risk and non-carcinogenic risk, while the former was about 3-4 orders of magnitude higher than the later. The major carcinogenic contaminants in this drinking water source were As, Cd and Cr6+, in which Cr6+ and As were the key carcinogenic contaminants that accounted for 98% of the carcinogenic risk. During 2007-2016, the health risks to both adult and children in Reservoir B showed significant increasing trends.

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