A UV purifier is a water treatment device that utilizes ultraviolet (UV) light to disinfect and purify water. It works by emitting UV radiation that effectively inactivates bacteria, viruses, and other pathogens without the use of chemicals, making the water safe for drinking and other uses. UV purifiers are efficient, eco-friendly, and maintain the taste and quality of water. They are commonly used in households, commercial settings, and water treatment facilities to ensure clean and safe water supply.