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      Microbial contamination of drinking water in rural schools in Shaanxi in 2018

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          Abstract

          Objective To understand the disinfection status and microbial pollution of water supply project in rural schools in Shaanxi Province in 2018, and to provide basis for improving drinking water quality in rural schools.

          Methods Data of water quality of water supply project in rural schools of Shaanxi Province in 2018 was collected, and the disinfectant surplus and microbial index compliance rate were analyzed according to "Sanitary Standard for Drinking Water” (GB 5749–2006).

          Results The overall compliance rate of microbial indicators of water supply projects in rural schools in Shaanxi Province was 68.09%, and that of groundwater microbial indicators (71.97%) was higher than that of surface water (61.42%) ( χ 2 = 15.68, P<0.01) ; The overall compliance rate of microbial indicators in flood season (71.85%) was higher than that in dry season (64.34%) ( χ 2 = 7.44, P<0.01) ; The rate of reaching the standard of disinfectant residue was 77. 27%. The rate of reaching the standard of microbial index of water samples with disinfection measures was higher than that of water samples without disinfection measures ( χ 2 = 31.88, P<0.01) , The rate of reaching the standard of microbial index of water samples with disinfectant residue (88.89%) was higher than that of water samples with disinfectant residue (44.44%) ( χ 2 = 12.28, P<0. 01).

          Conclusion The main cause of microbial contamination of drinking water in rural schools in Shaanxi Province is inadequate equipment of disinfection equipment in water supply projects or not being used as required. It is suggested that schools, education and health departments should take measures to strengthen supervision and management of water plants to ensure the normal use of disinfection equipment.

          Abstract

          【摘要】目的 了解陕西省 2018 年农村学校供水工程水质消毒和微生物指标污染情况, 为改善农村学校饮用水水 质提供依据。 方法 收集 2018 年陕西省农村学校供水工程水质监测数据, 参照《生活饮用水卫生标准》(GB 5749–2006) 对消毒剂余量和微生物指标达标率进行分析。 结果 陕西省农村学校供水工程微生物指标整体达标率为 68.09%, 地下水 微生物指标整体达标率(71.97%) 髙于地面水(61.42%) ( χ 2 = 15.68, P<0.01);丰水期微生物指标整体达标率(71.85%)髙于 枯水期(64.34%) ( χ 2=7.44, P<0.01); 消毒剂余量达标率为 77.27%, 有消毒措施水样微生物指标达标率髙于未采取消毒措 施的水样( χ 2 = 31.88, P<0.01), 消毒剂余量达标的水样微生物指标达标率(88.89%) 髙于不达标的水样(44.44%) ( χ 2 = 12.28, P<0.01)。 结论 陕西省农村学校饮用水受微生物污染的主要原因是供水工程消毒设备配备不足或未按要求使用。 建议学校、教育和卫生部门多措并举加强水厂监督管理, 确保消毒设备正常使用。

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          Author and article information

          Journal
          CJSH
          Chinese Journal of School Health
          Chinese Journal of School Health (China )
          1000-9817
          01 November 2019
          01 February 2020
          : 40
          : 11
          : 1715-1717
          Affiliations
          [1] 1Institute of Environment and Assessment, Shaanxi Provincial Center for Disease Control and Prevention, Xi’an (710054), China
          Author notes
          *Corresponding author: CHANG Feng, E-mail: laochang521@ 123456163.com
          Article
          j.cnki.1000-9817.2019.11.033
          10.16835/j.cnki.1000-9817.2019.11.033
          875d2e5b-cf20-4b6d-9ed9-903699ce8716
          © 2019 Chinese Journal of School Health

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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          Self URI (journal-page): http://www.cjsh.org.cn
          Categories
          Journal Article

          Ophthalmology & Optometry,Pediatrics,Nutrition & Dietetics,Clinical Psychology & Psychiatry,Public health
          Drinking; Water microbiology; Water pollution; Students; Rural health

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