Features 5 stage filtration system ensure clean and hygienic water all the time PP cotton filter is a pretreatment filter, which is used to filter the raw water and filter the sediment, debris, rust and suspension of the water Compressed activated carbon filter can remove the residual oxygen in water, disinfection byproducts, organic matter, humus, harmonia, odor and so on Pre-activated carbon filter can effectively adsorb the raw water in the different color, odor, oxygen, halogen and other substances Remove the residual chlorine in the water, chemicals, color, smell, and filer fine impurities Ultra-filtration membrane filter can remove solid impurities, suspended solids, colloids, impurities, bacteria, viruses and other harmful substances in water This product is suitable for municipal tap water and must be installed by a professional