Certified to reduce Lead, Chromium, Mercury and Fluoride, this pack of two replacement filters features Premium 5-stage Dual-Ion Exchange filtration system that removes virtually all dissolved solids in your water. The FDA requires the TDS level in purified bottled water to reach 000-010ppm and ZeroWater is the only filter in it's class to achieve this level. ZeroWater 2 Pack Replacement Filters,Plastic,White