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首页> 外文期刊>Environmental Systems Research >Assessment of the quality of drinking water in storage tanks and its implication on the safety of urban water supply in developing countries
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Assessment of the quality of drinking water in storage tanks and its implication on the safety of urban water supply in developing countries

机译：评估发展中国家储水箱中饮用水的质量及其对城市供水安全的影响

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Abstract Background Water quality problems are one of the manifestations of poverty and most developing countries including Ethiopia suffering a lot of health problems associated with consumption of contaminated water. Although communities living in urban areas of Ethiopia have access to piped water supply, cross-contamination in the distribution system and unsafe storage are the major source of water borne diseases hence they are mostly overlooked by water professionals. Results All water samples collected from drinking water storage tanks were positive for total coliforms and faecal coliforms. The result of this study showed that the drinking water was microbially contaminated in all sampling points. The level of microbial contamination increased from before entering the storage tank to after leaving the storage tank indicating that the presence of leakage in the distribution system and contamination at the storage tanks. The turbidity was found in the safe water quality range (2.1–2.9 NTU). Conclusion The current study indicated that all water samples were bacteriologically contaminated and none of them met the WHO maximum permissible limit of drinking water quality. The unsafe piped-water supply was attributed to both leakage and contamination in the distribution system or unsafe storage. Thus, detail risk assessment should be conducted from treatment to distribution including storage and safe handling of water at the point of use in order to provide complete intervention strategies in tackling waterborne diseases.
机译： Abstract Background 水质问题是贫困的表现之一，包括埃塞俄比亚在内的大多数发展中国家都面临着贫困。与饮用受污染的水有关的许多健康问题。尽管生活在埃塞俄比亚城市地区的社区可以使用自来水，但是分配系统中的交叉污染和不安全的储存是水传播疾病的主要来源，因此，它们通常被水务专业人员忽视。 结果 从饮用水储水罐收集的所有水样中大肠菌群和粪便大肠菌群均为阳性。这项研究的结果表明，所有采样点的饮用水均被微生物污染。微生物污染水平从进入储罐之前到离开储罐之后增加，这表明分配系统中存在泄漏和储罐处的污染。浊度在安全水质范围（2.1–2.9 NTU）内。 结论 The当前的研究表明，所有水样均受到细菌污染，均未达到WHO所允许的饮用水水质最高允许限值。管道供水不安全的原因是分配系统或不安全的存储系统中的泄漏和污染。因此，应从使用到处理的整个过程进行详细的风险评估，包括在使用时对水的储存和安全处理，以提供针对水传播疾病的完整干预策略。

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