The size of the nanofiltration membrane market was USD 998.9 million in 2023, and it will grow at a compound annual growth rate of 11% by the end of this decade, to touch a total value of USD 2,051.7 million by 2030. The growth of the industry has a lot to do with the fact that they retain magnesium and calcium ions and support in molecule separation. These products are also put to use in the dairy industry for lactose concentration and demineralization. The polymeric category held the major share, of 40%, because of the use of these variants in the sterilization and water softening. The polymeric type functions at low pressures, for offering extremely effective filtration, because of which it can be used in treating wastewater. Water and wastewater treatment is a main application of nanofiltration membrane at a global level due to the widespread use of nanofiltration in treatment and desalination procedures by water utilities. The water discharged from industries and agricultural fields comprises waste and needs to be treated for using it again. These membranes offer a higher filtration rate and work at low pressures. Also, they make use of less energy as opposed to an RO system, since the former offers a higher flux. It is assessed that in 2020, about 45% of the wastewater produced in households was discharged deprived of safe treatment. For treating it by removing pollutants, for example organic substances, heavy metals, and ions; and decolorizing and softening it cost-efficiently, nanofiltration membranes are employed in high numbers. Governments at a global level have implemented quite a few rules and guidelines and taken more than a few initiatives to create consciousness among people of the costs of the pollution and depletion of freshwater on earth. It is because of the rapid urbanization all over the world and growing pharma sector, the demand for nanofiltration membrane is rising considerably. What’s more, the trend will also continue in the years to come.