A random study found unusually high rates of heterotrophic bacteria in the bottled water, more than 500 cfu, the legal limit set by United States Pharmacopeia on how much bacteria should be present in drinking water in Canada. Unusually high amounts of bacteria were present in 70\% of the test samples across several brands of bottled water. “Heterotrophic bacteria counts in some of the bottles were found to be in revolting figures of (100) times more than the permitted limit,” said Sonish Azam, a Canadian researcher involved in the study, “This amount of bacteria is alarming, as if we are ingesting a cup of culture.” “Microbiologically speaking,” she said, “tap water is purer than bottled water — most bottled water. We didn't know this until we conducted the research.”
A random study found unusually high rates of in the bottled water, more than 500 cfu, the legal limit set by on how much bacteria should be present in drinking water in Canada. Unusually high amounts of bacteria were present in 70\% of the test samples across several brands of bottled water. “Heterotrophic bacteria counts in some of the bottles were found to be in revolting figures of (100) times more than the permitted limit,” said Sonish Azam, a Canadian researcher involved in the study, “This amount of bacteria is alarming, as if we are ingesting a cup of culture.” “Microbiologically speaking,” she said, “tap water is purer than bottled water — most bottled water. We didn't know this until we conducted the research.”
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heterotrophic bacteria
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United States Pharmacopeia