2019年陕西省城市公共供水水质卫生状况  

Water quality and sanitary status of urban public water supply in Shaanxi province,2019

作　　者：雷佩玉 郑晶利 贾茹 孟昭伟[1] LEI Pei-yu;ZHENG Jing-li;JIA Ru;MENG Zhao-wei(Shanxi Province Center for Disease Control and Prevention,Xi'an 710054,China)

机构地区：[1]陕西省疾病预防控制中心,西安710054

出　　处：《首都公共卫生》2020年第4期218-221,共4页Capital Journal of Public Health

基　　金：陕西省公共卫生检测监测服务平台(编号:2016FWPT-12)。

摘　　要：目的了解陕西省城市公共供水水质卫生现状,为进一步解决好城市供水安全保障问题提供科学依据。方法 2019年在陕西省108个县(区)城区设置城市饮用水监测点,实现市政供水全覆盖。参照《生活饮用水卫生标准》(GB5749-2006)按照不同区域对水质常规指标加氨氮进行分析评价。结果 2019年采集分析有效水样1 562份,水质整体达标率为87.52%,不同区域水质达标率由高到低为陕南地区>关中地区>陕北地区(P均<0.05);与其他两个区域相比,关中地区水质总大肠菌群达标率较高(P均<0.05),陕北地区水质菌落总数达标率较低(P均<0.05);除陕南地区毒理学指标全部达标外,铬、氟化物和硝酸盐氮在关中、陕北地区均存在不同程度超标现象。结论陕西省城市公共供水水质以微生物指标和氟化物、六价铬等毒理学指标超标为主。建议政府持续提升城市供水安全保障工程品质,统筹解决影响饮水安全的问题。Objective To understand the current sanitary status of urban public water supply in Shaanxi province,and to provide scientific evidences for further solving the sanitary problem of urban water supply.Methods In 2019,urban drinking water monitoring spots will be set up in 108 counties(districts) of Shaanxi province to realize full coverage of municipal water supply.According to Hygienic standards for drinking water quality(GB5749-2006),the conventional index of water quality plus ammonia nitrogen was analyzed and evaluated in different regions.Results In 2019,1 562 effective water samples were collected and analyzed,the overall water quality quality rate was 87.52%,and the regional water quality compliance rate from high to low,was southern,Guanzhong and northern area of Shaanxi(all P< 0.05).Compared with the other two regions,the water quality compliance rate of total coliform was higher(all P< 0.05) in Guanzhong area,but of water quality colonies was lower(all P<0.05) in northern area.In addition to all the toxicological indexes in southern Shaanxi,and chromium,fluoride and nitrate nitrogen in Guanzhong and northern Shaanxi were all above the standard.Conclusions The water quality of urban public water supply in Shaanxi province mainly above the standards of microbiological and other toxicological,such as fluoride,hexavalent chromium,indexes.It is suggested that the government should continue to improve the quality of urban water supply safety assurance project and solve the problems affecting the safety of drinking water as a whole.

关 键 词：公共供水 水质监测 城市 

分 类 号：R123.1[医药卫生—环境卫生学]