UV Sterilization system The optional built-in sterilization system provides safety drinking water. UV Sterilization filterUV light wipes out bacteria by destroying its DNA core, eliminating E. Coli, Salmonella and Hepatitis to name a few. The safety of drinking water is improved by combining with the existing filter system. The long-term stable use is possible by the UV with controller that works only at the time of water passing out. UV sterilization system for safety water tankUV sterilization technology is the safest way to remove over 99% of bacteria without any residual substances. UV sterilization technology enables safe water cold tank management.