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A properly working RO system will prevent viruses and bacteria from passing. For the extra paranoid you can get systems with a UV sterilisation step.


Just to add, most municipalities chlorinate the water slightly, so its highly unlikely youll find anything alive in it.

My water is fairly heavily chlorinated where i live compared to my previous county.

Letting the glass of water sit in open for a few minutes after pouring helps with taste because the chlorine evaporates.


If you have a lot of chlorine taste just having a pitcher in the fridge will nearly eliminate the chlorine taste.




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