12 on the uv shield the uv shield 11 serves as a fixture for the uv light source as well as a means to direct the uv light towards the areas intending to be sterilized 13 the uv light source 10 is wired to a short multi wire u201c pigtail u201d with a lamp connector 14 on the opposite end for the purpose of electrically connecting the uv light source to a safety interlock fig2 and corresponding power supply fig5 options fig2 refers to a safety interlock mechanism that is comprised of a lamp connector 14 power supply connector 20 safety interlock disconnect consisting of a lever activated switch 21 and housing 23 the safety interlock mechanism serves to function as a power disconnect to the uv lamp in the event the uv apparatus when mounted to a filter is removed from the filter cavity thus disconnecting power and preventing accidental exposure to the ultraviolet light rays the lever switch 21 when activated disconnects power from the uv lamp apparatus fig1 a 1b preventing it from operating the safety interlock mechanism can be mounted with optional u shaped brackets 22 for the purpose of attaching it to the edge of standard filter elements fig3 refers to a specially designed filter element in which the filter elements materials are specifically formulated to enhance the reactivity of the uv apparatus fig1 a 1b with the organic contaminants this specially designed filter housing 30 can be configured to accept multiple layers of filtration media 31 32 specifically chosen to increase the sterilization efficiency of the uv apparatus fig1 for example one or both layers can be of ordinary materials used for this purpose or of enhanced materials in terms of enhanced materials i have found it advantageous to form both layers from a.