Abstract: An electrodialysis purifier system employing an anode, cathodes, water streams, waste streams and ion exchange membranes therebetween. Ion exchange beads are contained within the water streams and waste streams primarily for conductivity control. Screens support the membranes for increased longevity and ribs are so positioned within the element to resist differential pressures encountered. Ion exchange sites are employed throughout the system to increase the dissociation of water into its component ions. Such sites also aid in reducing scale formation. A buffer zone is provided around the cathodes to separate hydroxyl ions from positive ions which would otherwise combine to form scale. Alignment tubes provide the dual purpose of conveying water to various locations throughout the purifier and provide alignment to the various sections.