Rahavard Salamat Journal

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Abstract Background& Objective: Today, with increasing population, reducing the per capita amount of water resources and increasing the physio-chemical and microbial contamination of water, water crisis is one of the major global problems .The purpose of this study was to evaluate the microbial quality of drinking water in the villages covered by Alborz province. Materials and Methods: This descriptive cross-sectional study was conducted in 1395. The statistical population consisted of 69 villages and three large recreational complexes along the Karaj-Callous road in Asmara .The results of this study are based on the statistics from the Laboratory of Water and Wastewater of Alborz Province during the years 1386 to 1394 and performed 342 samples in 1395 according to the WHO standard and microbiological quality assay according to the last edition of the standard book. Results: The results showed that during the ten years studied, 77.51% of the samples lacked chlorine. 54.98% of the samples were healthy, 27.68% of the samples were infected with chlorophyll and 17.34% of the samples were contaminated with warm-blooded calf. The highest total coliform infection in 1391 was 35.24 Percentage and maximum infiltration of thermal energy in 1388 was 23.4%. Conclusion: drinking water in some villages in the province of Alborz is undesirable due to lack of chlorination, and the relevant authorities should take the necessary measures to improve the microbial quality and improve water resources as well as water instructors to inject the optimum amount of chlorine to water resources

Keywords: Drinking water, microbial quality, remaining chlorine, Alborz rural areas

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