There is some H2O place in Neenah, (I don't remember the name of the company but its in the yellow pages) anyways they were selling drinking water of all types (even ro) delivered right to your door in 5 gal containers, and for delivered water I thought the price was resonable at around $1 a gal.
You can even get on a delivery schedule where they will deliver X amount on the first of the month or whatever your need is.
This water is sold to be in a water cooler, so they pick up the empty containers when they drop off the filled one, Just an Idea that I came across for my self down the road.
My .02 cent worth of nothing.