This 7-stage ROES-PHUV75 water filtration system is made from high calibre components to deliver exceptional contaminant rejection rates and long-lasting, reliable performance. Save money, time, and hassle from buying costly, bottled water and live healthier with ultra-safe pure mineral water that is contaminant free. 1st Stage: High-capacity polypropylene sediment filter removes dust, particles, and rust. Protects and extends the life of the membrane and system.2nd and 3rd Stage: Premium extruded carbon block gets rid of unpleasant chlorine, tastes, odours, cloudiness, and colours, as well as removes VOCs and other common chemicals from the water.4th Stage: High rejection TFC reverse osmosis membrane removes up to 99% of total dissolved solids (TDS) and contaminants such as arsenic, lead, fluoride, chromium, radium, bacteria, viruses, and much more.5th Stage: Ultra-Violet (UV) light sterilizes and destroys up to 99.99% of bacteria, viruses, and cysts in the water. 6th Stage: Advanced coconut shell refining carbon TCR (Total Contamination Removal) filter removes any possible residual taste from the tank.7th Stage: PH+ alkaline re-mineralizing calcium filter adds high-quality calcium carbonate to increase water alkalinity.