Tested and certified for reliable, easy-to-use in-home water filtration, the Delta® Clarifi™ Tankless Under Sink 6-Stage Reverse Osmosis System is certified to filter out more than 90 contaminants from your drinking water. The best-in-class system uses 6 filtration stages to reduce chlorine, chloramine, microplastics, PFAS, lead, arsenic, heavy metals, chemicals, nitrates, pharmaceuticals and more. The Clarifi™ Tankless System saves over 60% of under-sink space compared to tanked systems with its sleek design and 6-1/4-inch width. Designed for easy DIY maintenance, the carbon and RO filters and optional remineralizer cartridge have a two-year lifespan so you can quickly and easily replace them at the same time, and it takes less than a minute to replace each filter. Delta® Beverage Faucets pair with a wide range of filtration systems to conveniently provide purified drinking water in a variety of styles and finishes. Air gaps are integrated within the faucet for easy use with a reverse osmosis system. Delta Beverage Faucets are for cold water installation only and ideal for any reverse osmosis (RO), under the counter water filtration systems, or chillers but cannot be used with Instant Hot tanks. If installation does not require an air gap, the connection can simply be cut or coiled out of the way under the deck. Perfect for the pantry, butler's kitchen, or bar, but stylish enough to be featured next to your main faucet. Delta faucets with DIAMOND™ Seal Technology perform like new for life with a patented design which reduces leak points, is less hassle to install and lasts twice as long as the industry standard. You can install with confidence, knowing the Delta® Clarifi™ Tankless Reverse Osmosis System is backed by our warranty and highly-trained, live customer support.