This sleek space saving water pitcher comes with a unique 3 stage water filter cartridge. Unlike the major national brands that only offer a single stage filter, we combined the last filtration technology into a unique multi-stage filter. Our filter includes granulated active carbon (GAC) to remove chlroine, pesticides, and other chemicals linked to cancer risk. It also includes a unique ion exchange resin that removes heavy metals and water hardness. Finally a KDF is included to remove, iron, mercury, copper, nickel, chromium, cadmium, lead, and inhibits bacterial growth. This unique and amazing filter has another advantage over the major national brands in its capacity(the life of the filter). Many of the major brands if you read the box state their filter will last only a couple of months depending on your use, their capacity is normally under 100 gallons. By using high quality materials and design our filter lasts a remarkable 2,000 gallons (7,500 litres) saving you time and money with replacement filters.