The AP Easy LC is the best drinking water system for your home It is an undersink water purifying system The filter system removes chlorine, taste, odor along with lead and parasitic protozoan cysts It comes with a 1/4" quick connection It has a flow a rate of 75 gpm Its filter capacity is 750 gallons The C-LC cartridge comes along with it The purifier comes with a separate faucet for ease in direct drinking water It is easy to maintain and the cartridge can be changed without any huss or fuss but just a twist