Waterdrop - AP5527 Post Water Filter Cartridge, Model No.WD-W59, Replacement for Aqua-Pure System - White

After advanced upgrade, the model number is changed from WD-AP5527 into WD-W59. Waterdrop filters are of premium quality, dedicated to improving water quality. Waterdrop filter can effectively reduce chlorine, taste and odor, which is certified by IAPMO against NSF/ANSI 42 standard. Apart from that, it can also reduce heavy metals, sediment and rust.