Our ZeroWater 5-stage advanced water filter is where better taste meets superior water filtration. The water filter removes virtually all total dissolved solids (TDS) \u2013 think metals and salts \u2013 leaving the purest taste in every sip. ZeroWater is IAPMO-certified to reduce lead, the forever chemicals PFOA/PFOS, chromium, and mercury giving you peace of mind that every glass you pour for you and your family will be healthier and cleaner. Plus, you can help stop plastic waste and save up to 110 single-use plastic bottles per filter.\n\n--ZeroWater Filter Replacement Pack: Each filter has an estimated 15 Gallon Filter Life, but filter life can vary depending on water quality. For best results, change your filter when the TDS meter reads 006.\n--Advanced Filtration: Our 5-Stage Ion Exchange Replacement Filter removes virtually all dissolved solids (TDS) for the purest tasting water; Total Dissolved Solids are organic and inorganic materials, such as metals, minerals, salts, and i.