Reverse osmosis is a common process to purify or desalinate contaminated water by forcing water through a membrane. Water produced by reverse osmosis may be used for a variety of purposes, including desalination, wastewater treatment, concentration of contaminants, and the reclamation of dissolved minerals. Reverse Osmosis systems can remove pollutants from water including lead, pesticides, fluoride, pharmaceuticals, arsenic and much more. And with a carbon filter, an RO system can also remove chlorine to improve the taste, odor and appearance of your water.