Canada: A new study has found high level of bacteria in bottled water in Canada.
Azam and her colleagues randomly purchased several brands of bottled water from a local marketplace and subjected them to microbiological analysis. They discovered more than 70 per cent of famous brands tested did not meet the USP specifications for drinking water. "Heterotrophic bacteria counts in some of the bottles were found to be in revolting figures of one hundred times more than the permitted limit," said Azam. In comparison the average microbial count for different tap water samples was 170 cfu/mL. Azam stressed that these bacteria most likely do not cause disease and they have not confirmed the presence of disease-causing bacteria, but the high levels of bacteria in bottled water could pose a risk for vulnerable populations such as pregnant women, infants, immunocompromised patients and the elderly. "Bottled water is not expected to be free from microorganisms but the cfu observed in this study is surprisingly very high. Therefore, it is strongly recommended to establish a limit for the heterotrophic bacteria count as well as to identify the nature of microorganisms present in the bottled water," said Azam. PTI
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