It all depends on your location on the planet. I wouldn't dare to drink unfiltered water in areas in Africa, where the dangers of parasites is way higher, than,

It all depends on your location on the planet. I wouldn't dare to drink unfiltered water in areas in Africa, where the dangers of parasites is way higher, than, say, in Sweden. In Hungary, it's perfectly fine to drink water from springs, but only right at the point where it leaves the earth. Drink from it in a later point, an old fashion diarrhea is more than probable.