As a side note in this debate : the choice isn't between selfish people that wants to make money and nice caring people sharing water for free. You can have both of it : no price cap => free marketer and good samaritans supply water from the exterior of the zone AND the state helps poor people / those who can afford to buy more bottles can share them with their poor neighbors (might even pay them back later in their life if they make it : arrangement between people is not the concern of the water supplier).