Abstract: A device for purifying water of mineral contaminants, bacteria, protozoa, algae, fungus, and other undesirable impurities, as well as for preventing and removing scale from conduits and containers within which water is maintained, that utilizes an electronic circuit capable of generating a plurality of interacting electromagnetic fields. The circuitry is capable of generating the combination of a first static electromagnetic field of variable offset, a second radio frequency varying electromagnetic field, and a third low frequency varying electromagnetic field with high amplitude, short pulse width, spikes. In addition, the circuitry is capable of inducing a high negative ion concentration in the water within which electrodes connected to the circuitry are immersed. The invention anticipates the use of electrodes suitable not only for the flow of water about the electrodes through a conduit, but the placement of electrodes within a pool of water to be purified.