To provide a cartridge for water cleaner soft to the environment, so that a cartridge after use is sorted every sort of materials and the materials are re-utilized to the utmost by making the cartridge laid under the necessity of periodical disposal have a dividable structure.

In the cartridge for water cleaner provided with a cylindrical cartridge body 101 opened one end side, a cartridge cap 102 covering the open side of the cartridge body 101, and a treating material 107 such as activated coal in a space formed with both the cartridge cap 102 and the cartridge body 101, a screw part for screwing the cartridge cap 102 is formed at the upper part outer peripheral part of the open side of the cartridge body 101, and also a screw part for screwing a screw part of the cartridge body 101 is formed at the inner peripheral part side of the cartridge cap 102, and the cartridge body 101 and the cartridge cap 102 are separable.