Patent ID: 7150829

Claim:
A water treatment cartridge for treating drinking water, said water treatment cartridge comprising: (a) a housing, an inlet for introducing water into said water treatment cartridge, an outlet pod for egress of water from said water treatment cartridge, and a first treatment material, said first treatment material having a hollow core region; and (b) a second treatment material; wherein said second treatment material is retained within said core region of said first treatment material, by a liquid-pervious retainer, said retainer extending into said core region, such that said first treatment material and said second treatment material are in direct communication, such that water enters said water treatment cartridge via said inlet, the water then radially enters the first treatment material, then radially flows through said first treatment material, then, at least a portion of the water radially enters said second treatment material, then axially flows through said second treatment material, then egresses said water treatment cartridge via said outlet port.