"After the water passes through a reverse osmosis filter, it is essentially pure water. In addition to removing all organic molecules and viruses. Reverse osmosis filters have the smallest membrane size of all filtration methods, about 0.0001 microns. Reverse osmosis removes turbidity, monovalent ions (desalination), including microbes, and virtually all dissolved substances."
To understand how reverse osmosis works, it is helpful to understand osmosis. Osmosis occurs when a semipermeable membrane separates two saline solutions of different concentrations. Water will migrate from the weaker solution to the stronger one until the two solutions have the same concentration because the semipermeable membrane allows water to pass through, but not salt.
In reverse osmosis, the two solutions remain separated by a semipermeable membrane, but pressure is applied to reverse the natural flow of water. This forces the water to move from the more concentrated solution to the weaker one. Thus, the contaminants end up on one side of the semipermeable membrane and the pure water on the other.
The reverse osmosis treatment system can be a cost-effective investment for obtaining healthy and safe drinking water.