Potable water filtration system

[Gardner Yeaw]

Does anyone have a reccomendation for a water filter system for
drinking water? A simple particulate filter for dirt,etc is fine for
the shower and toilet, but the kitchen sink cold water and ice maker
are what I want to provide really well filtered water to. We currently
bring along bottled water for drinking, coffee, etc. and don't use the
icemaker, but that is a pain in the neck. Some of the filtration
systems come in at 10 cents plus per gallon, but bottled water is a
heck of a lot more than that. My '78 has a small filter under the sink
for which I have no idea how to order a replacement cartridge. I would
rather start fresh and do it right.

Any suggestions, experiences, wise cracks?

Gardner
78FC33 (when the Bird is not at my house, I just spend my time
thinking up questions)