Introducing the Smart Flow® Reverse Osmosis, Aquasana's brand-new, high-efficiency reverse osmosis system that provides you with optimum health and hydration. This RO system combines Aquasana's Claryum® filtration technology with reverse osmosis technology to remove up to 99.99% of 90 contaminants, including fluoride, arsenic, lead, chlorine, microplastics, PFOA/PFOS, and more. The Smart Flow® Reverse Osmosis boasts one of the highest certified contaminant removal rates of all reverse osmosis systems on the market. In fact, it's certified to reduce 89 more contaminants than Amazon's top-selling RO system is certified to reduce.* Featuring our patented Smart Flow® technology, this system provides you with more pure water, less water waste, and longer filter life than the average RO filter. The Smart Flow® Reverse Osmosis water filter boasts a 57% greater efficiency percentage and a 93% higher daily production rate than our previous reverse osmosis system. The Smart Flow® Reverse Osmosis is tested and certified by WQA to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1 to effectively reduce 90 contaminants, including 90% of fluoride. It's also certified to reduce 99.99% of cysts, 99.9% of asbestos, 99% of lead, VOCs, and microplastics, and 96% of chlorine, chloramines, arsenic, pesticides, and herbicides - all while restoring healthy minerals that other reverse osmosis systems remove, providing you with optimum health and hydration. The Smart Flow® Reverse Osmosis features a multi-stage filtration process to ensure maximum contaminant removal. Stage 1: Carbon Block: Reduces chlorine, taste, and odor prior to reverse osmosis filtration. Stage 2: Smart Flow® Membrane: Ultra-efficient, patented Smart Flow® membrane technology reduces fluoride, nitrates, nitrites, arsenic, PFOA/PFOS, and more. Stage 3: Advanced Carbon Block: Claryum® filter block ensures maximum contaminant removal. Activated and catalytic carbon filtration combines with Ion-exchange and sub-mic