Survey on Hygienic Status of Rural Centralized Water Supply Projects,Weihai City,2011

[Objective]To know the hygienic and safety status of centralized water supply projects in rural Weihai city.[Methods]Some centralized drinking water supply projects were extracted randomly from March to April and July to August,and then hygienic status and water quality were surveyed.[Results]Of 100 projects surveyed,3 had stopped water supply,the remaining 97 could meet basically the needs of daily life among rural residents.Among the 97 water supply projects,48.45% sources of water and 44.33% water supply projects around were polluted,9.28% sources of water and 11.34% water supply projects were protected.60.82% water were not treated;29.90% were disinfected,but did not meet the requirements of regular disinfection;12.37%-98.97% were short of the health management measures.388 samples was tested,the qualified rate was 57.22%,the qualified completely rate of 4 samples of water supply projects was 35.05%.The qualified rate of purification of water was 68.33%,untreated was 52.24%(P0.01);the rate of water samples purification was 66.18%,the rate of no purification was 55.31%(P0.05).The qualified rate of microbial indicators was 66.75%.[Conclusion]Water supply projects in rural Weihai city have many unsafe factors,the qualified rate of water quality is lower.