2015-2019年珠海市174份农村饮用水水质监测结果分析

目的了解珠海农村地区饮水卫生状况,为农村地区改水提供参考依据。方法 2015-2019年对珠海市10座农村集中式供水设施分别采集枯水期和丰水期水样共174份,对其监测结果进行统计分析。结果 2015-2019年共检测174份水样,合格85份,总体合格率为48.85%;经χ2检验,不同年度间水样合格率呈上升趋势,差异有统计学意义(χ2趋势=9.523,P<0.05);枯水期和丰水期的合格率分别为53.49%和44.32%,差异无统计学意义(χ2=1.464,P>0.05);出厂水和末梢水合格率分别为48.75%和48.94%,差异无统计学意义(χ2=0.001,P>0.05)。影响农村饮用水水质合格率的指标是微生物指标和部分一般理化感官指标。结论珠海市农村地区饮用水卫生状况不容乐观,微生物污染是存在的主要卫生问题,应加强农村自建供水设施改造,加快推动农村改水工作。

Monitoring results analysis of 174 rural drinking water quality in Zhuhai from 2015 to 2019

To understand the sanitary status of rural drinking water quality in Zhuhai City, so as to providere commendation for reconstructing water supply. Methods From 2015 to 2019, 174 water samples were collected in the dry season and the wet season from 10 rural centralized water supply facilities in Zhuhai City, and statistical analysis was used to monitor results. Results A total of 174 water samples were detected from 2015 to 2019, 85 of which were qualified, the qualified rate was 48.85%. Analyzed by Chi-square test, the qualified rate of water samples showed an overall rising trend indifferent years, and the difference was statistically significant (χ2=9.523, P<0.05). The qualified rate in the dry season and the wet season were 53.49% and 44.32%, respectively, and the difference was no statistically significant (χ2=1.464, P>0.05). The qualified rate of finished water and tap water were 48.75% and 48.94%, respectively, and the difference was no statistically significant (χ2 =0.001, P >0.05). The indicators affecting the qualified rate of rural drinking water quality were microbial indicators and some general chemical sensory indicators. Conclusion The hygienic condition of drinking water is far from being optimistic in some rural areas of Zhuhai City. Microbial contamination is still a main hygienic problem in drinking water safety. The reconstruction of self-built water supply facilities in rural areas should strengthen to speed up rural water reform work.