GE’s Homespring™ ultra-filtration system features ultrafiltration membrane technology ideal for well, cistern, lake and river water. It offers an optional activated carbon prefilter to improve taste and minimize odors, provides a continuous supply of water (even during power outages) and is engineered to automatically flush itself clean. The system also boasts a maximum flowrate of 4.5 gpm (17 liters/minute) and a system efficiency of 95 percent. Visit the website or call Pentair Residential Filtration Customer Care for more information. http://www.homespring.com, (800) 279-9404