Patent ID: 6872303

Claim:
A water treatment cartridge, comprising: a hollow cylindrical cartridge body having a top wall defining a closed top end and having an open bottom end, the top wall having a water outlet aperture formed therethrough; a flat disk disposed within the cartridge body flush against the top wall and forming a support shoulder, the disk having a water passage aperture formed therethrough; an outflow filter disk disposed within the cartridge body flush against the support shoulder; an end cap affixed over the bottom end of the cartridge body, the end cap having at least one fluid passage defined therein adapted for a fluid to pass through the end cap into the cartridge body; an inlet filter disk supported by said end cap, the inlet filter disk covering the at least one fluid passage defined in the end cap; and a water treating media contained within the cartridge body comprising at least one active water treating chemical, wherein said at least one active water treating chemical comprises a chemical composition having the property of releasing chlorine dioxide on contact with water; whereby as a stream of water passes through the water treating media within the cartridge body, at least one water treating chemical is released into the water to treat a water system downstream from the water treatment cartridge.