Nano-substances have received unique interest in water-pollutants mitigation researches on account that ultimate decade. Two important properties make nanoparticles especially beneficial as sorbents. On a mass basis, they have much large floor regions as compared to macro particles. They also can greater with numerous reactor businesses to boom their chemical affinity closer to target compounds. Nano filtration strategies extensively used to eliminate cations, herbal natural matter, organic contaminants, natural pollution, nitrates and arsenic from groundwater and floor water. Nano-membranes used to treat infected water via way of means of filtration or separation strategies. Nano sorbents extensively used as separation media in water purification to eliminate inorganic and natural pollution from infected water. During the ultimate decade, titanium dioxide (TiO2) nanoparticles have emerged as promising picture graph catalysts for water purification. Consequently, extraordinary people had followed the methods which include chemical precipitation, sol–gel, vapour deposition, solvo thermal, solid-state response etc. for the synthesis of a few nanostructured combined oxides, which can be efficaciously use for groundwater treatment.

Keywords : Nanomaterials, Pollutants, Sorption, Filtration, Adsorption