Reverse osmosis is sometimes referred to as ultrafiltration because it involves the movement of water through the membrane. The membrane has microscopic openings that allow water molecules, but not larger compounds, to pass. Some reverse osmosis membranes also have an electrical charge that helps to remove some of the chemicals on the membrane surface. Proper maintenance is critical to maintaining long-term effectiveness. Some units are equipped with an automatic membrane rinsing system to clean the membrane.

Note: Ro Spare Parts are usually only used to treat potable water and cooking water, so they may not be suitable for handling larger items. Reverse osmosis systems are not suitable for treating water sources contaminated with coliforms.

Water quality test analysis and interpretation will provide information on natural substances and substances produced by human activities. The treatment of contaminated water supplies should be considered as a temporary solution. The best solution is to remove the source of pollution and/or obtain a new water supply.

Always test the water before installing any water treatment system. This test will identify the level of bacteria and minerals present. An explanation of the test results will help determine if treatment is needed and what type of system or system needs to be considered. The intended use of water (drinking, drinking and cooking, laundry or all household use) will also help determine the level of treatment required and the type of system chosen.