潍坊市农村集中式供水卫生状况调查

目的了解农村集中式供水的卫生状况,为防止介水传染病的发生提供科学依据。方法于2011年7-11月,随机选择潍坊市684处农村集中式供水进行基本情况调查,对每处出厂水和末梢水采样检测。结果本市农村集中式供水以地下水为主,深层地下水设施占95.91%,完全处理的工程水质占2.78%,有消毒设施的供水单位仅占6.87%。抽检的1 368份水样,总合格率为35.82%,出厂水和末梢水水质合格率分别为38.45%和33.19%;微生物和硝酸盐超标较严重,其中菌落总数、总大肠菌群、硝酸盐氮和耐热大肠菌群的超标率分别为:45.54%、36.33%、23.25%和12.79%。结论本市农村集中式供水卫生状况较差,农民饮水存在卫生安全隐患。

Sanitary investigation of village concentrated water supply in Weifang

Objective To investigate the health situation of village concentrated water supply,and provide scientific evidence to prevent from water-borne infection.Methods From July to November in 2011,684 villages concentrated water supply sites were selected randomly,and their basic situation was investigated.The source and peripheral water of each site was detected.Results Ground water was major source of countryside concentrated supply water in Weifang,the proportion of deep layer ground water was 95.91%,the proportion of complete treated engineering water was 2.78%,the proportion of water supplied with sterilization installation was only 6.87%;in those 1 368 detected water samples,the total qualification rates were 35.82%,the qualification rate of source and peripheral water was 38.45% and 33.19%;the microbes and nitrate exceeded national standard obviously,and the total number of colony,coli group,nitrogen and heat-proof coli group also exceeded standards obviously,which unqualified rates were 45.54%,36.33%,23.25% and 12.79%.Conclusion The sanitary situation of countryside concentrated water supply in Weifang is poor,there is health hidden danger in village drinking water.