1 The first stage of filtration is the sediment filter, which reduces suspended particles such as dirt, dust and rust.
2 The second stage of filtration is the carbon filter. This filter reduces volatile organic chemicals (VOCs), chlorine, and other compounds that might impact the taste or odor of the water.
Chlorine should be removed from the water before the water enters the membrane. This will help preserve the life of the membrane.
3 The center and third stage of a reverse osmosis system is the semi-permeable membrane. It is responsible for rejecting up to 98% of the total dissolved solids in the water. This is where the purification takes place.