HC HITECH UV sterilizers are becoming increasingly popular for home/commercial water treatment. It uses ultraviolet radiation to kill any bacteria, viruses, and other harmful organisms that may be present in your water. The UV light damages the DNA of these organisms, making them unable to replicate and eliminating the risk of infection or illness.It is a type of UV sterilizer that's designed to be used with flowing water sources such as taps, faucets, and showerheads. These sterilizers typically have a compact design that makes them easy to install and use, and very effective at killing a wide range of microorganisms.