I have to do a permanent under the sink hook up but right now I fill up two five gallon spring water bottles.
Very simple you need
two standard size housings
one alumina filter
one high quality carbon block filter
one sediment filter if this is a problem.
I don’t need a sediment filter for my town’s water system..... but when you filter out sediment it keep the carbon block from being clogged and ineffective.
Two filters in series. Carbon first is slightly better but not important. Three if sediment is an issue and sedimnat filter obviously comes first
For 2 housings and carbon block + alumina filters it costs about $80. You can start anytime by connecting to the kitchen sink by adapting a plastic shower house like this http://www.dreamstime.com/stock-photo-shower-spray-hose-image21731750
And connect this to one of the housings
If you plan to install under sink be sure to get a double or triple bracket to hold the housings
******** anything else let me know