Reverse Osmosis Water Filter

A reverse osmosis water filter system purifies water by first passing the water through a series of filters to remove large contaminants and harmful chemicals/pollutants, and then secondarily forcing the water through a special plastic membrane to remove the very small contaminants. Throughout the first filtration stage, tap or well water passes through a sediment filter where silt, sediment and particles (like sand and clay) are removed. Water is then forced through a high efficiency carbon block filter where micro-pulverized carbon efficiently absorbs chlorine, chloramines, pesticides and other harmful organic chemicals and pollutants. This pre-filtered water, now stripped of membrane-damaging particles and chemicals, flows into the RO (reverse osmosis) membrane module where pure water molecules are separated, leaving salts, hardness, bacteria, viruses, pyrogens and other impurities isolated and available for flushing from the system. The unit's ''waste water'' is a drawback, typically creating two to four gallons or more of dirty water for every one gallon of clean, purified water. For most areas of the world, however, RO is the only reasonable option for water treatment. RO units can produce one gallon of clean water for about .5 cents, and the membranes will filter 5,000 to 10,000 gallons of clean water if properly cared for. RO daily water production ratings are nominal. A 10 gallon per day unit will produce about 10 gallons of filtered water per day when operating under water pressure of 65 PSI at about 70°F and water containing average TDS (total dissolved solids). If your TDS is high (i.e. you have very hard water) or water temperature or pressure is too low, RO units will produce less water per day. So, if you need exactly 24 gallons of water every day, and you know you have hard water, cold water or low pressure, do not buy a 24-gpd (gallon per day) unit – go with the next larger size. Home Page | FAQs | Glossary | Contact Us