Enjoy great-tasting water with the latest filter technology. The ZeroWater filtration system combines FIVE sophisticated technologies that work together to remove virtually all dissolved solids from your tap water, delivering you great tasting water. ZeroWater’s first layer of filtration, activated carbon and oxidation reduction alloy removes the chlorine taste you are accustom to with tap water. The Ion Exchange stage removes virtually all dissolved solids that may be left over from public water systems or even leached into your water from piping such as Aluminum, Lead, Zinc, Nitrate and more. Three additional stages are included to remove other impurities and to ensure your water receives the appropriate amount of treatment time to deliver a “000” reading on your laboratory-grade Total Dissolved Solids meter. Stage 1 - Activated carbon infused micron cloth, Stage 2 - Multi-layer system using activated carbon and oxidation reduction alloy, Stage 3 - Distributor that maximized contact, Stage 4 - Comprehensive ION EXCHANGE array, Stage 5 - Non-woven membrane to remove fine particles. Filter cartridge life is based on household water consumption and inlet water quality. How often the cartridge needs to be replaced is determined by how much water you put through the system and how hard the cartridge has to work to clean the water you put through it. Filtering your water through ZeroWater filters not only improves the taste of your tap water, it also prevents you from throwing plastic water bottles into the trash and clogging up landfills. Contains 12 cartridges.