i have a twin setup, it only gets used if the local water looks or taste a bit ify, portable just hangs on the tail gate and conects via standard hose fittings to the nearest tap or pump,,, outlet is a small tap asembly that also ataches above kitchen area,,,
use the same sytem at home as a permanent setup,,, a Pre filter and then the carbon filter. home one gets changed every 6 months, but CT one is when ever i remember,,,
they do make a big difference, taking out a lot of those little nastys befor they go upsetting your insides..
Very much worth the money
BHG