Roya Mousazadeh
Groundwater and dam water are the main water sources to supply water for the towns and villages' .Water from these sources should be very pure and low in soluble material and free from pathogenic microorganisms. The aim of this study is to determine the chemical and microbial quality of drinking water of Esteghlal Dam of Bandar Abbas and its comparison with international standards. This Method is cross - sectional. In 2012, four sets of water samples were collected from the Esteghlal dam of Bandar Abbas for chemical and microbial analyses. In terms of Microbial quality, the MPN index (All possible coli forms in hundred ml of water) was determined and the presence of coli forms through a multi-tube samples test was performed. Chemical samples in 2-liter glass containers were collected, and then parameters of anions, cations, alkalinity, water hardness and nitrogen compounds (nitrate, nitrite and ammonia) values were determined. The results of the chemical experiments of water samples showed that pH Parameter of Esteghlal Dam is desirable and study on water hardness showed that 160 mg/l was calcium carbonate, which was According to World Health Organization standards. Studies on anion and cation of the water of the dam indicate that their concentrations were optimal, but the amount of fluorine1.85mg was more than the maximum of standard concentration. And the results of microbial tests on water samples indicated that the water of dam contains microbial contamination, and the results of the samples tested was positive for existence of coli forms .Therefore, considering the standard of the World Health Organization and Institute of Standards and Industrial Research of Iran, drinking water of Bandar Abbas without purging is non-potable.
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