吕梁地区城镇集中式供水卫生状况调查

目的：了解吕梁地区城镇集中式供水卫生现状。方法：对吕梁地区城镇市政集中式供水卫生进行调查。结果：全区１３个市政集中式供水单位仅３个实行饮水消毒，其余均不消毒，所查水源３０米范围内有生活污染源的占２７．５９％；１００米范围有污水灌田占１０．３５％；１００米范围有农田使用化肥占４４．８３％；１０００米范围有工业污染源占２４．１４％。水质监测，一级水占３４．８８％，三级和低于三级水占３３．７２％，枯水期优于丰水期（Ｐ〈０．０５），限制水质级别的因素主要是细菌学指标。结论：提示我区城镇集中式供水面临的问题主要是饮水消毒，其次是水源卫生防护。

AN INVESTIGATION INTO THE SANITARY CONDITION OF THE CENTRALIZED WATER SUPPLY IN THE TOWNS OF LULIANG PREFECTURE

Objective:To know the sanitary situation of the centralized water supply in the towns of Luliang prefecture.Method:To investigate the sanitation of the centralized water supply in the towns of Luliang prefecture.Results:Only in 3 water supply units in which drinking water is contaminated,the drinking water sterile procudure has been carried out.Among the water sources within 30 metres investigated,the drinking water contamination makes up 27 59%;within 100 metres,the sewage irrigation 10 35%;and the farmland using chemical fertilizer 44 83%;and within 1000 metres,the industrial pollution 24 14%.After examining and determining the water quality in the area,water on grade A makes up 34 88%,while grade C or lower is 33 72%.The condition in the dry season is superior to that of the abundant period( P< 0 05).The results show that the factors which limit the water quality refer to bacteriological index.Conclusion:The primary problems of centralized water supply in the towns of Luliang are the drinking water sterilization and the protection of water supply sanitation.