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Health Risk Assessment of Drinking Water Quality in Tianjin Based on GIS

FU Gang1 ZENG Qiang1 ZHAO Liang1 ZHANG Yue2 FENG Bao-jia1 WANG Rui1 ZHANG Lei1 WANG Yang1 HOU Chang-chun1

(1.Institute of Environment and Health, Tianjin Centers for Disease Control and Prevention, Tianjin, China 300011)
(2.First Teaching Hospital of Tianjin University of TCM ( Traditional Chinese Medicine), Tianjin, China 300381)
【Knowledge Link】radiation; carcinogens

【Abstract】This study intends to assess the potential health hazards of drinking water quality and explore the application of geographic information system (GIS) in drinking water safety in Tianjin. Eight hundred and fifty water samples from 401 sampling points in Tianjin were measured according to the national drinking water standards. The risk assessment was conducted using the environmental health risk assessment model recommended by US EAP, and GIS was combined to explore the information visualization and risk factors simultaneously. The results showed that the health risks of carcinogens,non-carcinogens were 3.83 × 10−5, 5.62 × 10−9 and 3.83 × 10−5 for total health risk respectively. The rank of health risk was carcinogen > non-carcinogen. The rank of carcinogens health risk was urban > new area > rural area, chromium (Ⅵ) > cadmium > arsenic > trichlormethane > carbon tetrachloride. The rank of noncarcinogens health risk was rural area > new area > urban, fluoride > cyanide > lead > nitrate. The total health risk level of drinking water in Tianjin was lower than that of ICRP recommended level (5.0 × 10−5),while was between US EPA recommended level (1.0 × 10−4–1.0 × 10−6). It was at an acceptable level and would not cause obvious health hazards. The main health risks of drinking water came from carcinogens. More attentions should be paid to chromium (Ⅵ) for carcinogens and fluoride for non-carcinogens. GIS can accomplish information visualization of drinking water risk assessment and further exploration of risk factors.

【Keywords】 drinking water; health; risk assessment; geographic information system; spatial distribution; drinking water; health; risk assessment; geographic information system; spatial distribution;

【Funds】 Science and Technology Foundation Program of Tianjin Pubic Health Bureau (2013KY18, 2013KY19) Study Plan Program of Tianjin Application Basis and Frontier Technology (14JCQNJC11900) Science and Technology Foundation Program of Tianjin Health and Famliy Planning Commission (2014KY22) Science and Technology Foundation Program of Tianjin Center for Disease Control and Prevention (CDCKY1301)

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This Article

ISSN:0250-3301

CN: 11-1895/X

Vol 36, No. 12, Pages 4553-4560

December 2015

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Abstract

  • 1 Materials and methods
  • 2 Results and analysis
  • 3 Discussion
  • 4 Conclusions
  • References