Reverse osmosis (RO) systems can be bulky difficult to install and many 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 conventional RO systems. Additionally the Circle RO Water Filter eliminates any need for electricity by integrating the tank and filters. The Brondell H2O+ Circle RO Water Filter’s exclusive Smart Valve and unique circular reservoir design are the keys to its efficient design. This technology eliminates back-pressure on the RO membrane filter reducing wastewater to an average of approximately 2 gallons for every gallon of drinking water – up to 10 times more efficient than many RO systems. The Circle’s refill rate is more than twice as fast as non-electric systems and equally as fast as those with electric pumps. It offers simplified installation and maintenance with features such as auto-flushing twist and lock filter changes and “quick-connect” connections. The Brondell H2O+ Circle RO Water Filter delivers water savings power savings and space-savings all in a beautiful simplified design. The Circle Reverse Osmosis Water Filtration System utilizes four separate water filters dramatically reducing industrial chemicals heavy metals pesticides herbicides total dissolved solids (TDS) volatile organic compounds (VOCs) microorganisms cysts bad tastes and odors. The Circle is the fastest most elegant and efficient high quality reverse osmosis system available for a healthy home and family.