Many people may be curious whether UV water purifier poses any danger to user. The Answer is no because water is transparent, which UV light can pass through it without water absorbing UV light. It is in the same manner as air where UV can pass through, which we can breathe in the air that UV has passed through safely. Ultraviolet light can kill germs, especially in drinking water, and it also can be used to sterilize tools or foods. Currently, these technologies have been widely used in water purifier.