Fast water flow - 0.3-0.4 gal/min 400GPD reverse osmosis reverse water filtration system that produces a water ratio up to 1.5:1 of pure water to wastewater , Compare to traditional RO water system,ROG400 save water waste by 450%. Outstanding design - The true filter change indicator remind you when to change the filters. Unique leak-free integrated water route solve the leaking problem that most traditional RO water filter systems have, and 8 inch slim body tankless design save 70% storage space undercounter. Superior filtration results - The 3-stage water filter system process removes up to 99% of over 1,000 contaminants, including lead, chlorine, fluoride, arsenic, hormones, asbestos, calcium, sodium, bacteria, giardia, viruses and more. Premium quality -GREATWELL RO system's components tested by an independent 3rd party against NSF/ANSI standards. Use of FDA-approved material in all parts. Customer satisfaction is our top priority. All GREATWELL products come with 1-year limited manufacturer warranty, lifetime technical support provided by our dedicated support team based in in Atlanta, GA and available at email@example.com. Buy now RISK FREE and experience the GREATWELL's difference.