Analysis on Current Status of Rural Centralized Water-supply Project in Shaanxi

Objective To investigate the sanitation status of rural centralized water-supply project in Shaanxi Province,which is of vital significance in changing the existing status of rural centralized water-supply projects and guiding the construction of later water-improving project.Methods According to the requirements of Quality Monitoring Program of Rural Water Security Project issued by the National Patriotic Health Campaign Committee Office,we investigated 1,099 rural centralized water-supply projects which covered a population of 1,618,136 people in Shaanxi Province,and then tested and evaluated the water quality in wet and dry seasons based on Standards of Drinking Water Sanitation.Results Groundwater as a water source accounted for 73.70% of the investigated projects,and surface-water as a water source accounted for 26.30%.The qualified rate of the investigated projects was 21.93%,and the qualified rate of covering-population of the projects was 23.08%.The water-quality tests showed that there were statistically significant differences in the qualified rates between dry and wet seasons,between surface and underground water samples,and among the different treatment methods.No statistically significant difference was found in the qualified rates between produced water and terminal water samples.The qualified rates of bacteriological indicators were low,and the qualified rates of other 16 indicators of water-samples were all higher than 90%.Conclusions Currently,the technique of water treatments of rural centralized water-supply projects in Shaanxi is imperfect,and the sanitation of drinking water lacks engineering supports.The qualified rates of water samples are low,and the main cause is excessive microbes.The population of drinking insecurity water is large,and there are serious potential hygienic risks for drinking water quality.It is necessary to take appropriate protection for the current projects and increase sanitation protection and disinfection treatment in the construction of later project.