Ultraviolet Water Purification is what you use if you want 99.999% elimination of microorganisms from your water.

Ultraviolet water sterilization is popular because it is so effective.  It is perfect for well water or city water.  Ultraviolet (UV) radiation is sent through pre-filtered water and kills bacteria, viruses, yeasts, molds and other organisms.  UV is used in hospitals and in industry for water cleaning.

UV has to be used with carbon and sediment filters because if there are particles in the water, the UV light may not catch organisms that can hide behind contaminates.  UV is perfect for using as a post-disinfection method.