MODEL RO-10 3-stage Reverse Osmosis Water Filter system Great tasting drinking water that is free of suspended solids. This unit produces two gallons of high quality drinking water in an hour. It hooks up under any kitchen sink and installs easily. The MODEL RO 10 will make up to 50 gallons of quality water a day. It rejects up to 99% of all contaminants, is NSF approved and has a one micron sediment filter and a granular activated carbon filter before the reverse osmosis membrane.