Water is pre-treated to eliminate chlorine, sediment, and bigger particles before it enters the reverse osmosis system. The membrane is better protected from harm thanks to this pre-treatment.

The salt and other contaminants move to the concentrated side of the semipermeable membrane as the pressurized water is forced through it. After passing through the membrane, the water is purified and ready for use.

Further treatments, like pH adjustment or remineralization, may be used to improve the quality and flavor of the RO-treated water. This process guarantees that the water is pure and pH-balanced, so it may be used to make drinks enjoyable to consume.

The semi-permeability of nanofilter membranes is similar to reverse osmosis. Their increased permeability enables the simultaneous processing of more water, in contrast to reverse osmosis.