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| Health risk assessment of drinking water in Ningbo City |
| ZHAO Xuefei, WANG Aihong, SHI Bijun, GU Shaohua, ZHANG Dandan
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| Department of Environmental and Occupational Health, Ningbo Center for Disease Control and Prevention, Ningbo, Zhejiang 315000, China |
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Abstract Objective To evaluate the health risk of drinking water in Ningbo City, Zhejiang Province from 2021 to 2022, so as to provide insights into ensuring the safety of drinking water. Methods The monitoring data of drinking water from 2021 to 2022 in Ningbo City were collected from the Chinese Disease Prevention and Control Information System. The routine indicators and disinfectant indicators (radioactivity indicators were excluded) of drinking water were evaluated according to the reference limits issued by Standards for Drinking Water Quality (GB 5749-2006), and the qualification rates were calculated. The indicators with detection rate higher than 50% were selected, and assessed the carcinogenic and non-carcinogenic risks via drinking water using the risk assessment model recommended by the United States Environmental Protection Agency. Results A total of 1 678 samples were monitored in Ningbo City from 2021 to 2022. Sodium hypochlorite was the main disinfectant among 1 558 samples from centralized water supply (1 079 samples, 64.30%), and none of the 120 samples from decentralized water supply underwent disinfection treatment. The qualification rate of 88.38%, and the pollutants with a detection rate higher than 50% were nitrate, fluoride, trichloromethane and aluminum. The median carcinogenic risk value of trichloromethane was 2.964×10-6 (interquartile range, 3.909×10-6), and the median hazard quotient values of nitrate, fluoride, trichloromethane and aluminum were 1.631×10-2 (interquartile range, 1.361×10-2), 3.955×10-2 (3.164×10-2), 2.231×10-2 (2.942×10-2) and 2.136×10-4 (6.573×10-4), respectively. Conclusion The carcinogenic and non-carcinogenic risks through drinking water for 17 pollutants in drinking water of Ningbo City from 2021 to 2022 were at low levels.
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Received: 04 December 2023
Revised: 18 January 2024
Published: 15 April 2024
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[1] 潘璐,王炳玲,王寅,等.2014—2019年青岛市生活饮用水健康风险评估[J].山东大学学报(医学版),2021,59(12):42-49,57.
[2] 廖雅芬,叶坚,杨业洲.肇庆市城市饮用水化学物质健康风险评估[J].预防医学,2021,33(9):951-954.
[3] 李湉湉. 环境健康风险评估方法第一讲环境健康风险评估概述及其在我国应用的展望(待续)[J].环境与健康杂志,2015,32(3):266-268.
[4] US Environmental Protection Agency. Methods for assessing exposure to chemical substances.Volume 4:methods for enumerating and characterizing populations exposed to chemical substances [EB/OL]. [2024-01-18] .https://www.epa.gov/superfund.
[5] 张逸龙,林涵.宁波市水务环境集团:再生水复合利用解城市“缺水之困”[J].宁波通讯,2022(18):42-45.
[6] 史碧君,王爱红,谷少华,等.2016—2021年宁波市生活饮用水水质变化趋势[J].健康研究,2023,43(5):509-513.
[7] 中华人民共和国卫生部,中国国家标准化管理委员会.生活饮用水卫生标准:GB 5749—2006[S].北京:中国标准出版社,2007.
[8] 中华人民共和国国家卫生健康委员会.化学物质环境健康风险评估技术指南:WS/T 777—2021[S].北京:中国标准出版社,2021.
[9] 中华人民共和国环境保护部.中国人群暴露参数手册(成人卷)[M].北京:中国环境出版社,2013.
[10] 吴位新,陈强,王祚懿,等.农村小型集中式供水细菌污染控制效果评价[J].预防医学,2021,33(7):735-737.
[11] DEMARINI DAVID M.A review on the 40th anniversary of the first regulation of drinking water disinfection by-products[J] . Environ Mol Mutagen,2020,61(6):588-601.
[12] 赵金辉,郭欣,孙庆华.环境健康风险评估在某市居民生活饮用水中的应用[J].环境卫生学杂志,2018,8(3):221-225.
[13] 贾茹,郑晶利,孙茜,等.陕西省生活饮用水中10种污染物的健康风险评价[J].职业与健康,2022,38(22):3092-3096.
[14] 江穗宁,邬军军,廖灵灵,等.2019年—2022年惠州市集中式生活饮用水中化学污染物状况及健康风险评估[J].中国卫生检验杂志,2023,33(6):737-741,747.
[15] 黄素丽,蓝涛,刘鑫,等.2019年深圳市生活饮用水健康风险评估[J].环境卫生学杂志,2021,11(6):519-524.
[16] 顾鸿儒. 2017—2018年T市生活饮用水水质分析与健康风险评价[D].苏州:苏州大学,2018. |
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