Introducing the All-In-One Tankless Reverse Osmosis System. Featuring a premium 1-stage filtration designed with high quality materials to bring you the best tasting and purest water possible into your home. The all-in-one RO filter is made up of 4 layers to bring you the purest and best tasting water. [1st – ACF] Captures sediment: Rust, and Residual Chlorine. [2nd – RO-600G] removes total dissolved solids (TDS), heavy Metals and Chemicals. [3rd – CB] Removes unwanted colors and odors. [4th – PP] Conditions water removing carbon particles because of 3rd Stage Carbon Block. The all-in-one filter can remove over 1,000 impurities like (Arsenic, Lead, Mercury, fluoride, nitrates phosphate, radioactivity, chromium, sodium, copper, etc.) HARMFUL CHEMICALS (Chlorine, Nitrates, Fluoride, PFAs (forever chemicals)) and lowers TDS (total dissolved solids), and much more including unwanted Odor & Taste. Featuring a smart Filter alert to let you know when a cartridge change is needed or soon will be. With a pure to drain ratio of 2:1, you can enjoy more pure water and less wasted water and money.