Pureit NewMineral RO+UV Ultima has a 7-Stage Purification System which ensures you get ‘ Mineralized Water At Home’ and it also removes excess total dissolved solids (TDS) to make your water tastier. In the first stage, the water passes through the Pre-Sediment Filter which removes fine and coarse particulate impurities/dirt. The second stage is the Pre-RO Carbon Filter that removes chlorine and organic impurities like harmful pesticides. It also adsorbs bad taste and odor-causing organic compounds from water. The third stage is the Post-Carbon Sediment Filter which removes the remaining dirt. Then the water passes through the RO Membrane which removes dissolved salts, hardness, pesticides and heavy metals like arsenic, lead, and mercury. It also removes microbial contaminants like bacteria, virus, protozoa, and parasites. The fifth stage is UV Reactor adds additional protection to inactivate bacteria, virus, and parasites. After UV Reactor, water passes through a TDS Modulator that adds adequate quantities of essential minerals to the water. The sixth stage it again passes through MF Membrane which ensures the water is not only purified once but thrice. And final stage is the Post-RO Carbon Filter, which acts as a polisher and enhances the taste of purified water.