Assessment of the microbiological quality of rain water: A case study of selected water scarce area in Bangladesh

M. Ahmed, A. K. Majumder, S. Hossain, A. Nayeem
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引用次数: 3

Abstract

Availability as well as access to drinking water is one of the considerable constraints for achieving sustainable goals in many countries while microbial contamination has exacerbated this issue more significantly. The increasing trend of population and industrialization for economic growth has adversely been affecting fresh water resources that eventually leading to scarcity of available drinking water. Hence, controlling water pollution along with focusing on alternative water sources are important for ensuring access to safe drinking water. This study aimed to determine the biological water quality parameters of rainfall water in the water-scarce areas of Bangladesh. About sixty rainwater samples collected from seven different districts were collected for microbial analysis in particular Total Coliform (TC) and Fecal Coliform (FC) by using membrane filtration and direct counting method. The result found that 70 % of samples were free from total coliform, whereas only 5 % samples showed above 100 colonies. On the other hand, 83% samples were free from fecal coliform, whereas only 2% samples were within the range of 11-100 colonies. This study has also revealed that most of the samples collected from Rangamati and Khulna district were free from total coliform and fecal coliform. This study may also encourage people living in these water scarce areas to come forward for rainwater harvesting system as a prospective tool for achieving sustainable goal in drinking sector of Bangladesh. Stamford Journal of Microbiology, Vol.8(1) 2018: 24-26
雨水微生物质量评价:以孟加拉国选定缺水地区为例
在许多国家,饮用水的供应和获取是实现可持续目标的重大制约因素之一,而微生物污染更严重地加剧了这一问题。人口和工业化对经济增长的增长趋势对淡水资源产生了不利影响,最终导致可用饮用水的短缺。因此,控制水污染以及注重替代水源对于确保获得安全饮用水非常重要。本研究旨在确定孟加拉国缺水地区降水的生物水质参数。采用膜过滤法和直接计数法对7个不同地区的60份雨水样品进行微生物分析,重点分析了总大肠菌群(TC)和粪便大肠菌群(FC)。结果发现,70%的样品不含总大肠菌群,只有5%的样品菌落超过100个。另一方面,83%的样品没有粪便大肠菌群,只有2%的样品在11-100个菌落范围内。该研究还表明,在Rangamati和Khulna地区收集的大多数样本均未发现总大肠菌群和粪便大肠菌群。这项研究也可以鼓励生活在这些缺水地区的人们挺身而出,将雨水收集系统作为实现孟加拉国饮用水部门可持续目标的前瞻性工具。微生物学报,Vol.8(1) 2018: 24-26
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