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Investigation of the microbial and physicochemical quality of drinking water in Ardabil city in 2019-2020
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Mahsa Hasanpour Kashani *   |
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Abstract: (23 Views) |
| The microbial and physicochemical characteristics of drinking water in terms of type and quantity are the basis for judging its potability and the impact of each of the above components on improving its quality, increasing its acceptability, or threatening its consumer's health. The aim of this study is to investigate the microbial and physicochemical parameters and heavy elements of lead and cadmium in drinking water in Ardabil city and compare it with national and international standards in order to answer the question of whether Ardabil drinking water is in a healthy state or not. This cross-sectional study was conducted by sampling from four regions of the north, south, east, and west of Ardabil city in the summer of 2019 and winter of 2020 in order to monitor the quality of water resources. Chemical analysis and examination of the elements present in the water were performed on the samples, and the samples were analyzed for the presence of heavy metals lead and cadmium, total hardness based on carbonate-calcium, total dissolved solids (TDS), pH, chlorine (CL), fluoride, phosphate, nitrate, nitrite, sulfate, dissolved oxygen (DO), biochemical oxygen (BOD), chemical oxygen (COD), turbidity, fecal coliform and total coliform using standard methods and were compared with the Iranian National Standard 1053 and the WHO International Standard. The results showed that the values of the measured parameters, except for the average cadmium (which in 53% of cases the concentration of this metal exceeded the World Health Organization guideline value), phosphate, maximum total hardness, fluoride, and nitrite were lower than the values of the Iranian National Standard 1053 and the WHO International Standard. Also, seasonal changes also affect the quantity and quality of drinking water, so that the highest values for the parameters studied were obtained in the winter (cold season of the year). |
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| Keywords: Physicochemical quality, Drinking water, National and international standard, Seasonal changes, Ardabil |
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Type of Study: Research |
Subject:
Special
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