Abstract: An apparatus and method for remediating an underground and/or aqueous contaminant. The method and apparatus utilize at least one electrically conductive surface to attract aqueous hydrogen ions. At the surface, the hydrogen ions interact with excess electrons to form dissolved hydrogen molecules. Dissolved hydrogen molecules provide a proton source for bioreactive material, either provided to or naturally occurring in the environment. The bioreactive material assists in the reduction of the contaminant into a less environmentally harmful compound.