Stefani Reverse Osmosis Water Filtration is proven to be the most convenient and effective method of water filtration. This 5-stage filtration process is applied by many bottled water providers in order to produce the highest quality filtered water. The Activated Granular Carbon filter will then reduce chlorine, taste and odours. The third stage of the process will filter the water through the 5 Micron Activated Carbon Block to further reduce herbicides, pesticides, chlorine, chemicals to protect you and the membrane. Once the water has filtered through the first 3 stages, the water will then be fed into the 12L Storage tank. Once the faucet is in use and water is flowing, the water will then filter through the 0.0001 Micron Reverse Osmosis Membrane to reduce impurities.