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IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Environmental Monitoring and Assessment Pub Date : 2025-04-12 DOI:10.1007/s10661-025-13989-5

Nudrat Nadeem, Muhammad Nadeem, Nazish Bostan, Sadia Sattar, Roger Simm, Sundus Javed

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引用次数: 0

摘要

在巴基斯坦几乎所有大城市，水过滤厂都是当地居民的主要饮用水来源，但这些过滤厂无法有效消除水中的污染物。本研究旨在评估水质，重点是理化参数和细菌污染，包括从巴基斯坦双城过滤厂收集的饮用水中出现的耐多药细菌（N = 64）。理化参数按照美国公共卫生协会的标准指南进行分析，总大肠菌群计数采用膜过滤法测定。对革兰氏阴性菌进行了分离，并确定了其种类和抗生素敏感性。在几个样本中发现溶解性总固体、硝酸盐、总大肠菌群、铅和铜含量升高。多元相关系数显示，硝酸盐含量与细菌污染样本中的总大肠菌群数量之间存在显著的正相关关系。抗生素耐药性模式显示，细菌具有多重耐药性和广泛耐药性，对第三代头孢菌素的耐药性很高。我们的研究结果突出表明，迫切需要改进水过滤工艺并进行定期监测，以便为当地社区提供安全的饮用水。

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Assessment of water quality and occurrence of multidrug-resistant clinically relevant bacteria in drinking water in the twin cities of Pakistan

Water filtration plants are a main source of drinking water for local populations in almost all big cities of Pakistan but these filtration plants are ineffective in eliminating contaminants from water. This study was conducted to evaluate water quality with specific focus on physicochemical parameters and bacterial contamination including occurrence of multidrug-resistant bacteria in drinking water collected from filtration plants (N = 64) of the twin cities of Pakistan. Physicochemical parameters were analyzed following American Public Health Association standard guidelines and total coliform count was determined using membrane filtration method. Gram-negative bacteria were isolated and characterized in terms of species and antibiotic susceptibility. Elevated levels of total dissolved solids, nitrates, total coliforms, lead and copper were found in several samples. Multivariate correlation coefficient revealed significant positive correlation between nitrate levels and total coliform count in bacteriologically contaminated samples. Antibiotic resistance patterns revealed multidrug-resistant and extensively drug-resistant bacteria with high resistance against third generation cephalosporins. Our results highlight the urgent need for improved water filtration processes and regular monitoring to provide safe drinking water to the local community.

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来源期刊

Environmental Monitoring and Assessment 环境科学-环境科学

CiteScore

4.70

自引率

6.70%

发文量

1000

审稿时长

7.3 months

期刊介绍： Environmental Monitoring and Assessment emphasizes technical developments and data arising from environmental monitoring and assessment, the use of scientific principles in the design of monitoring systems at the local, regional and global scales, and the use of monitoring data in assessing the consequences of natural resource management actions and pollution risks to man and the environment.