Abstract
Drinking water quality is being affected by industrial effluents, pesticides and fertilizers, poor sanitation services and unhygienic practices. Thus, upper and middle-class people used to prefer bottled water for drinking instead of tap water. Increasing demand for bottled water leads to the presence of low quality branded waters in the market due to the high demand and improper quality checks. In this regard, this study is carried out to assess the physicochemical properties of various branded bottled waters. For that, ten different water brand samples, coded from S1 to S10, were collected from Safoora Goth, Karachi. Various physicochemical quality parameters of branded water samples were analyzed according to the set procedures of American Society for Testing and Materials. It was discovered that the pH levels of S9 and S8 bottled water brands were slightly less than World Health Organization guideline values. The physical and chemical quality parameters of S1, S2, S4, S5, S7, and S10 branded bottled water samples were found within standards.
Highlights
Sufficient quantity of clean and safe water is crucial to human health [1,2,3]
It is prerequisite for bottled water brands to register for quality production in Pakistan, replicas and inferior brands are posing serious threat to the public health
The drinking quality parameters examined in the laboratory were pH, total dissolved solids (TDS), electrical conductivity (EC), salinity, alkalinity, chlorides, hardness, turbidity, color, nitrates and fluorides
Summary
Sufficient quantity of clean and safe water is crucial to human health [1,2,3]. Population growth, rapid urbanization, industrialization, changing lifestyles and economic development cause severe stress on the quantity of available water resources and on its quality [4, 5]. Upper and middle class people use to prefer bottled water for drinking purpose instead of using tap water as it is considered to be free from contaminants [1, 11, 12, 15, 16]. It is prerequisite for bottled water brands to register for quality production in Pakistan, replicas and inferior brands are posing serious threat to the public health. The present study is an attempt to investigate on the physicochemical quality parameters of different branded bottled waters, commonly consumed by the people of Karachi
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