Journal
EXPOSURE AND HEALTH
Volume 15, Issue 3, Pages 619-639Publisher
SPRINGER
DOI: 10.1007/s12403-022-00512-1
Keywords
Water pollution; Water quality; Water borne diseases; Public health; Toxic chemicals; Pakistan
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Water contamination is a significant issue in Pakistan, with population growth, industrialization, climate change, and inadequate water quality management contributing to the decline in drinking water quality. Bacteriological contamination, toxic elements, and pesticides were found in both surface water and groundwater, leading to waterborne diseases. The majority of sampled water exceeded national and international standards for drinking water quality, highlighting the urgent need for water management strategies and protective measures.
Water contamination is one of the most significant hazards to human health on the world scale. Drinking water quality in Pakistan is decreasing gradually due to alarming population growth, rapid industrialization, climate change and lack of efficient water quality management. In Pakistan, the majority of the population doesn't have access to safe and healthy drinking water sources, and people are forced to use unsafe drinking water. This review compiled data from multiple studies published in international and national journals from 2010 to 2022 and reports issued by the governments and non-governmental institutions to highlight Pakistan's drinking water quality status, and to emphasize major water pollutants, sources of contaminants, and significant health problems. The results revealed that bacteriological contamination such as coliforms (total coliform, fecal coliform, Escherichia coli), toxic elements like arsenic (As), iron (Fe), nickel (Ni), chloride (Cl-), fluoride (F-), mercury (Hg) and pesticides were found in both surface water and groundwater, and were the major causes of waterborne diseases. The majority of sampled water had bacteriological, physicochemical and toxic metals concentrations exceeding the National Standards for Drinking Water Quality (NSDWQ) and WHO drinking water quality standards. There is an immediate need to adopt water management strategies and protective measures to overcome the shortages and unhygienic conditions of the drinking water supply in Pakistan.
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