A water purifier is a device used to remove impurities from water, making it safe for drinking and other purposes. Water from natural sources often contains contaminants such as bacteria, viruses, heavy metals, chemicals, and suspended particles. Consuming such water without treatment can lead to serious health issues, including waterborne diseases like cholera, typhoid, and diarrhea. There are several types of water purifiers available, each using different purification methods. use a membrane to filter out dissolved salts, heavy metals, and microbes, making them ideal for hard or salty water. Ultraviolet (UV) purifiers use UV light to kill bacteria and viruses but do not remove chemical contaminants. Ultrafiltration (UF) purifiers use a physical barrier to remove larger particles and microbes and are effective for low TDS (Total Dissolved Solids) water.