But it doesn't destroy my stomach and it is actually healthy. Maybe not the tap water, though my city's water is drinkable, most of the time.

Still many people buy 19 liter bottles of water, especially in bigger cities where the water is a lil shady. Or they buy filtering systems which taste horrible but does the job. Though someone I knew couldn't get their filters changed because they didn't want to call the only service people for showing their ass cracks. I don't know why though, ass crack is a staple for many jobs, from plumbers to repair people.

Anyway, 19 liter bottles are actually heavily reused so even when you buy Coca Cola's brand of water, you may not pollute as much.