Investigation on sanitary condition of rural drinking water in Luannan County in 2012

[Objective]To understand the safe and sanitary condition of rural drinking water in Luannan County,provide scientific basis for improving the rural drinking water quality.[Methods]The data of water supply modes,types of water source,coverage of the population and water supply capacity in Luannan County were investigated,and 30 rural centralized water supply projects were collected as the research objects by stratified random sampling.Each research site was sampled once in the dry season and flood season respectively.[Results]A total of 120 water samples were monitored,and 97 were qualified with the qualified rate of 80.8%.The qualified rate in flood season and dry season was 70.0% and 91.7% respectively,and the difference was significant.The lower qualified rates of microbiological indicators were the main factor that influenced the water quality.39 719 people were involved in this study,and 17 130 have drunk the unqualified water,which accounted for 43.1% of all population,and was higher than the national proportion(34.3%).[Conclusion]The sanitary condition of rural drinking water in Luannan County is poor,and microbial contamination is the main health problem in rural drinking water in Luannan County.In order to ensure the safety of drinking water,it is necessary to strengthen the water source protection and disinfection treatment,and improve the monitoring of microbiological indicators in the flood season.