How your water bottle could be a reservoir of bacteria and fungi
Briefly

The increase in water consumption is not only pushed by health benefits like better skin and digestion, but also by rising concerns over plastic waste and health risks from contaminated reusable bottles.
Studies indicate that without proper cleaning, reusable water bottles can harbor harmful microorganisms, with a significant percentage exceeding safe limits established for drinking water.
Maria del Mar Tomas points out that the bacteria found in reusable bottles are often coliforms, which can originate from feces. This highlights a serious health risk, especially concerning the presence of E. coli and Staphylococcus aureus.
Researchers have found that common molds, including Aspergillus and Penicillium, can grow in reusable bottles, which could pose additional health risks if not managed properly.
Read at english.elpais.com
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