Purenex RO-6-100 6-Stage Reverse Osmosis Water Filter System with Storage Tank Overall rejection/removal rate: 98-Percent to 99-Percent for the Ultra-pure removes chlorine, chloramines, bad taste and odor removes sediment, rust, dirt removes 95-Percent to 97-Percent of chemical, minerals, dissolved solids, like arsenic, lead, silica, nitrate, copper, ammonia, sodium, fluoride removes the mineral and chemical contents of water and achieving 99-Percent to 100-Percent removal rate