I had a reverse osmosis system installed yesterday. It costs $1000 US but I'm renting it for $29 US /month. You have to love that!!!!!!!!!!
I've been using RO water all along but I was using the 5 gallon jugs they deliver to offices and some homes. They deliver once a month so I had 6 jugs (30 gallons) sitting in my kitchen taking up space. NOw it's on tap!!!!!!! awesome