Brondell H2O+ Circle RC100 Reverse Osmosis Undercounter Water Filtration SystemA Better System for Better Water Reverse osmosis (RO) systems can be bulky, difficult to install, and require electricity and pumps to operate. Most importantly, conventional RO systems are extremely inefficient wasting up to 24 gallons of water for every gallon of drinkable water! Brondell's Circle Reverse Osmosis Water Filtration System utilizes patented new technology to eliminate back pressure making it up to 10 times more efficient than