A SWS water purifier is a type of water purification system that uses a reverse osmosis process to remove impurities from water. The system consists of a semipermeable membrane, an airtight container and a pump. The semipermeable membrane allows only pure water molecules to pass through while rejecting larger molecules such as salt ions and other contaminants. The airtight container prevents the escape of any contaminated water during the reverse osmosis process.