Impacts of temperature alteration on the drinking water quality stored in plastic bottles

Abstract

Many people prefer to drink bottled water instead off the tap water. The bottled water is stored in the plastic bottles sometimes for long time. These plastic bottles might leach out some harmful materials into the water especially when exposed to temperature alteration, which may affect human health. This research work focused on investigating the effect of changing temperature on the bottled water quality. The work studied the effect of heating water in plastic bottles by sun, oven, and microwave. The study included also the impact of cooling and freezing the bottled waters. Results showed that temperature alterations caused changes in some physicochemical properties of bottled waters such as decreasing the values of pH and TDS and increasing levels of fluoride and chloride. In addition, the concentration levels of some physiochemical parameters exceeded the permissible values for drinking water. With temperature alterations, all levels of heavy metals in bottled waters were minimal except some small concentrations of copper and zinc. Results confirmed also differences in behavior between the bottled water brands exposed to the same temperature alterations. Heating bottled waters above 50 °C is alarming problem on the water quality. This is because above this degree, many alternations were observed in the water content. The outcomes of this work are useful for improving the current legislation on bottled waters and their storage.

Levels of Phthalate Acid Esters in Drinking Water Bottled in PET (Polyethylene Terephthalate) and PC (Polycarbonates) Bottles - stored under Different Storage Conditions in Mwanza City, Tanzania

“…Results showed that there was no statistically significant difference in DMP and DEHP concentrations at specific times among samples stored indoors and outdoors with pvalues of 0.549 and 0.077 respectively (Table 8). This illustrates how temperature, whether indoors or outdoors, influences a number of the physical properties of drinking water, such as its density, viscosity, decreasing the values of total dissolved substance(TDS), alkalinity, and dissolved chemical content [35].…”

Analytical Review of Microplastics Occurrence in Bottled Water, Tap Water, and Wastewater Treatment Plants

“…; sunlight and moisture). In a research study conducted by Ahmed et al [25], where they investigated the potential effects of temperature change on bottled water quality, the temperature changes resulted in changes in the physicochemical properties of bottled water. Qiao et al [26] investigated the storage habits of polyethylene terephthalate (PET) bottled drinking water during summer in laboratory and car trunks.…”

A comparative study of bottled and tap water in Abbottabad city: Implications for stakeholders

“…Additionally, it was found that water from a residential RO device had a greater negative impact on climate change and the use of fossil fuels than water from a commercial RO device. Ahmed et al (2021) examined how temperature variations affect the caliber of bottled water. They investigated what happened when they froze and cooled bottled water and when they heated the water in plastic bottles in the sun, oven, and microwave.…”

“…The most suitable study area in such circumstances is where people consume bottled water and tap water. A recent surge has been observed in bottled water consumption in Jinnahabad (Ahmed et al, 2021;Ahmed et al, 2020), making it a suitable area for site selection and water alternatives comparison.…”