【摘要】 目的了解惠州市生活饮用水水质卫生状况,为提高全市饮用水卫生质量提供科学依据。方法用水质综合指数法,对2016—2018年惠州市集中式出厂水、末梢水和二次供水进行分析与评价。结果 2016—2018年共检测集中式生活饮用水水样1 061份,平均水质综合指数WQI为0. 51±0. 71,水质合格率为92. 46%,3种生活饮用水总体水质差异无统计学意义(P> 0. 05)。出厂水在不同年份和不同采样类型下水质及其合格率差异有统计学意义(P <0. 05);末梢水水质在2018年达到最优,且枯水期水质优于丰水期水质,城市末梢水水质优于农村末梢水水质,水质差异有统计学意义(P <0. 05);二次供水在各分类下水质差异均无统计学意义,且各分类的水质合格率均为100. 00%;另外,不同水源类型的出厂水水质差异无统计学意义(P <0. 05)。结论 2016—2018年惠州市集中式生活饮用水水质总体较好。更多还原

【Abstract】 Objective To understand the sanitary status of drinking water in Huizhou City,and to provide a scientific basis for improving the quality of drinking water in the city. Methods The quality of centralized finished water,tap water and secondary water supply in Huizhou City from 2016 to 2018 was analyzed and evaluated by comprehensive index method. Results A total of 1 061 centralized drinking water samples were tested from 2016 to 2018. The average WQI was 0. 51 ± 0. 71,and the pass rate of water quality was 92. 46%. There was no statistically significant difference in the overall water quality of three kinds of drinking water. There were significant differences in the quality and qualification rate of the finished water in different years and sampling types. The quality of tap water reached the optimum level in 2018,and the quality of the tap water in the dry season was better than that in the rich season. The quality of urban tap water was better than that of rural tap water,and the difference was statistically significant. There was no statistically significant difference in the quality of secondary water supply under each classification,and the pass rate of each classification was 100. 00%. In addition,there was no statistically significant difference in the quality of the finished water from different sources. Conclusion The quality of centralized drinking water in Huizhou from 2016 to 2018 was generally good.更多还原