Abstract: An arcing electron stream apparatus and method for reducing pollutants in a fluid. The device includes first and second electrodes and a chamber there-between. Voltage is impressed between the electrodes at a frequency, thereby causing a plurality of arcing electron streams to occur between the electrodes. The electrodes have stepped surface such that the central first section of the electrodes are in closer proximity to each other than are the outer second sections. This stepped configuration causes arcing electron streams to progressively be formed along the electrodes and, thus, traverse throughout the chamber, thereby effectively treating molecules within the chamber.