Thefilters restricttheflowof everything but water. Water can flow through the filters but bacteria, particles, and salt cannot. Contaminants are trapped ahead of the membrane, producing high quality water.
RO units are more expensive than other technologies.
If yourwater is chlorinated, you should be aware thatthin film membranes will deteriorate when exposed to the chlorine. Instead, you may wantto select a chlorine resistant membrane. Keep in mind that water filtered by an RO system is at room temperature when it comes out of the tap. RO units also produce water that tastes like rain water. When RO units are used intandemwithGACfilters,THMs, many pesticides and other pollutants are removed effectively.