Efficacy evaluation of drinking water distribution network existence in microbial quality desirability and its chlorination status in small communities - Case study: Kermanshah province villages

Background and Aims: Safe drinking water supply is very important for human societies. The goal of this study is the determination of drinking water distribution network existence in microbial quality desirability and its chlorination status in small communities – Case study: Kermanshah province villages.Material and Methods: This method of the study is descriptive and analytical. The required data and information were collected from existing data of health center. The collected samples for microbial quality monitoring of rural drinking water were taken by health center during three-year period, that were 9174 samples. Data analysis was taken by SPSS software by using T-Test and ANOVA.Results: The results showed 79.7% and 84.3% as an average rate of desirability of microbial water quality and residual chlorination status respectively in villages having distribution system and 60.36% and 69.56% in those without distribution system.Conclusion: Assessing of microbial quality of water in all rural areas showed that villages with distribution network have better quality than other villages. So development planning for implementation of water distribution networks are suggested in other rural communities also for improvment of water quality in all rural communities (with and without distribution networks) the water safety plane should be employed.Key words: Microbial quality, Residual chlorine, Rural area, Distribution network, Kermansha