Bluewater Spirit 300C-HF Reverse Osmosis Water Filtration System Filters 43.2 US gallons of water per hour, superior flow of 3.0 liters per minute, ideal for home or restaurant use. Bluewater technology utilizing SuperiorOsmosis to remove 99% of harmful contaminants, including metals and micro-organisms. Uses a particle and granulated activated Carbon (GAC) prefiltration and membrane. Electronically-Controlled for maximum water flow to included faucet, no storage tank, direct flow. 18-Month Warranty