Home Master TMULTRA Ultra Undersink Reverse Osmosis Water Filter System A better RO System-Home Master Ultra's innovative design solves the most common problems associated with traditional RO systems Highly Pure Water - advanced filtration and purification stages remove 99.99 percent of iron, chemicals, metals, microorganisms and other contaminants Great for well water - included IRON prefilter protects RO membrane; UV filter destroys microorganisms. No change in taste, odor, pH, conductivity or general chemistry of the water Long lasting and easy change filters - change only once a year or every 2000 gallons; quick and easy to change filter does not require tools Faster flow rate - water flows twice as fast compared to traditional RO systems