Reverse osmosis water filter systems are an important part of the solution to the growing world water crisis. They are the most effective technology for filtering out pollutants from water, but they are also more complex than other filtration systems. To help you understand the difference between reverse osmosis and other filtration systems, here is a brief overview of a reverse osmosis system. Reverse Osmosis Systems: Reverse osmosis (RO) is a water purification technology that uses a semi-permeable membrane to remove ions, molecules, and larger particles from drinking water.  Reverse osmosis systems are often used in areas where other kinds of water treatment methods are not available or are not…