Replacement cartridge for the PiConnect wai Intensive FilterCoconut-based carbon block filter.Ideal for removing up to 99% of the following contaminants:Odors and bad taste in the waterRetention of particlesRemoval of chlorine and similar undesirable substancesRetention of various heavy metals such as lead, etc.Retention of organic compoundsRetention of pesticides and herbicidesRetention of hor...