There are several different types of water filtration methods which we will explore in-depth. If you need water filtration for your home, give us a call at 800-428-8001! Distillation Distillation is the oldest form of water filtration where water is heated to boiling and the water vapor rises to a condenser. The cooling water lowers the temperature and the vapor is condensed, collected and stored. A majority of the contaminants remain in the liquid phase vessel. In some cases there are carry-overs that are found in the distilled water. Ion Exchange This process occurs when water percolates through bead-like spherical resin materials. Ions in the water are then exchanged to fix the beads.The two common types of methods are softening and deionization. Softening is used to reduce water hardness and reverse osmosis. The beads in the softener are used to exchange two sodium ions for calcium and magnesium ions that are removed. Deionization occurs when the beads exchange hydrogen ions for cations hydroxyl ions for anions. When used with other methods, deionization can be a crucial factor of a total water purification system. Reverse Osmosis Reverse osmosis is one of the most popular water filtration methods because it removes a wide-range of contaminants which can be a hazard to your health. This process happens when most contaminants are pushed out from the water through a semi-permeable membrane.