Joseph DiStefano posted a note on his PhillyDeals blog last Thursday outlining a King of Prussia firm. Quench provides a water service that does not use bottles, but instead us"activated charcoal, ultraviolet light and, sometimes, reverse osmosis to freshen common tapwater."
I'm intrigued by this. A few years ago as part of cost cutting measure my employer stopped paying for the water cooler out of company funds. I'm now the "water queen." I pay for the water cooler and anyone wanting to use it pays a percentage share (number of people divided by average water bill).
This could be an interesting option.