iSpring RCC1UP-AK 7-Stage Maximum Performance 100 GPD Under-Sink Reverse Osmosis Drinking Water Filtration System with Booster Pump, Alkaline pH+ Remineralization Filter and UV Sterilizer iSpring Maximum Performance Line - unmatched speed, efficiency, and drain ratio Pre-equipped booster pump operates near silent Filters 1,000+ water pollutants including common adversaries chlorine and fluoride Thin-film composite semipermeable RO membrane filters down to 0.0001 micron (a human hair is approximately 50 microns) RO membrane rated at 100 gallons per day, superior to the standard 75 GPD membranes on most systems Alkaline remineralization filter balances pH and reintroduces healthy ionized minerals 11W ultraviolet sterilizer kills viruses and bacteria; powers on and off with water flow Streamlined DIY installation; fits under sink cabinets Register your purchase under warranty directly with the manufacturer to activate your free one-year money back guarantee Lifetime support from iSpring in Alpharetta, GA at (678) 261-7611