A fluid treatment system (10) is disclosed that includes a control unit (102) that controls the overall operation of the fluid treatment system (10). A ballast circuit (103) is coupled with an electromagnetic radiation emitting assembly (14). In the preferred fluid treatment system (10), the ballast circuit (103) is inductively coupled with the electromagnetic radiation assembly (14). The inductively coupled ballast circuit (103) inductively energizes an electromagnetic radiation emitting device (60) that is located in the electromagnetic radiation emitting assembly (14) in response to a predetermined electric signal from the control unit (102). In addition, the fluid treatment system (10) includes a radio frequency identification system (124) that is used to monitor various functional and operation aspects of the electromagnetic radiation emitting assembly (14) and a filter assembly (16) used in the fluid treatment system (10).