Patent ID: 7267769

Claim:
A water purification system, comprising: a central tube having a perforated section; a carbon filter having a central aperture sized to receive a portion of said central tube; a reverse-osmosis (RO) filter formed around said perforated section of said central tube, said RO filter being positioned downstream from said carbon filter; a sump containing said carbon filter, said RO filter, and said central tube; a head adapted to be coupled to said sump; an inlet formed in said head enabling flow of unpurified feed water into said carbon filter; a first channel formed within said central tube enabling water to flow from said RO filter, and through said perforated section of said central tube; a second channel defined by an inner annular surface formed in said carbon filter and an outer surface of said central tube, said second channel enabling water filtered by said carbon filter to flow into said reverse-osmosis (RO) filter; and an outlet formed in said head enabling water filtered by said RO filter to flow from said first channel.