Ultra low energy reverse osmosis drinking water purification system for residential and light commercial applications Sediment and compressed carbon block pre-filtration removes tiny particles like rust, silt, taste and odor-causing chemicals like chlorine, chloramine and rotten-egg odors. High-efficiency AXEON HF5 Series Thin Film Composite reverse osmosis membrane removes up to 98.5% of water contaminants like nitrate, TDS, fluoride, lead, sodium and mercury Concentrate valve Produces 1000 gallons per day at 80 PSI (5.52 bar) Ideal for residential drinking water use, medical offices, laboratories, schools, aquariums and hydroponic growing operations.