In order to sell water to people that already have water, you need to convince them that your water is good and their's is badOr at least that your water is somehow better or more healthy.

That's why lots of people will never buy bottled water ... they know it's mostly hype.

Thats' also why lots of people do buy bottled water. They have no idea.

Now, if you could get a supply/source of good, pure water to a place that has either no water, or truly bad water ...