I have a 5 filter setup that is simpler than it sounds. Here's the breakdown:
1) A clone of the blue Camco filter that is common. Essentially a 100 micron filter that snags the largest pollutants from the city water.
http://amzn.to/2u0TEc4
2) Then a 5 micron filter for much smaller sediment.
http://amzn.to/2pj2Jr2
3) Next is a 1 micron filter, going even smaller.
http://amzn.to/2IzsDzx
4) Then a 0.5 micron carbon block filter which gets even finer and removes the chlorine taste.
http://amzn.to/2pkez4S
5) Finally, a KDF GAC filter for ultimate purification.
http://amzn.to/2pkeGxk
All of this is contained in a pair of canister kits (
http://amzn.to/2FP7wYk) and held up on 2 stands (
http://amzn.to/2pjwZml).
I check the filters every 3 months and usually replace #2 and #3 which are very evidently discolored (#1 also get replaced at that time). Filter #4 remains fairly clean for much longer but I replace that at 6 months. #5 gets replaced yearly.
Quick connects make hooking up a breeze. Our water is the cleanest and best tasting no matter where we are.