It depends on what kind if water.
Sea Salt Water: It can sometimes penetrate your skin, don't drink sea salt water because it can make you sick and very ill.Beach Water: Beach water can have some bacteria and germs in it, but other than that it's fine to swim in.
Hose Water: It's very cold, if your filling up your pool or something like that, you can not go in it the next day because it is still cold and that can give you hypothermia.
Well Water: Well water can give you viruses. That is because well water has a lot of germs and bacteria.
Bottled Water: Some bottled water can have BPA in it. The store bought water bottles that are reusable don't have BPA in it. The bottled water that can come in a package of 10-20 can have BPA in it.
ESTÁS LEYENDO
Earth Facts
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