our bodies are composed of 70 percent water, i think we need 10 glass a day or about 2-3 litres perday..
Pure water : Im driking usually two bottles of 1.5 Liters, sometimes three, sometimes only one. But im also drinking a lot of coffe, tea, beer, cola and so on
You should take at least 5L of water each day to stay away from doctors But i'm taking just 3 to 4L a dya.
I try to drink a lot, often 3 - 4 liters. I use to just fill a bottle to have with me, as this encourage me to always drink.