We have demonstrated that reductive hydrodehalogenation of electron-deficient aryl halides, a reaction that is typically carried out using very negative reducing conditions in dry solvents, can be carried out via mediated C2O4 2-oxidation in mixed DMF/H2O solutions at low potentials. Specifically, oxidation of DiMeFc at a carbon anode results in homogeneous C2O4 oxidation, which leads to in-situ generation of a potent reductant, CO2 •-. We have shown that CO2 •- produced by homogeneous C2O4 2-oxidation is capable of reductively cleaving Ar-X (X = Br, Cl) bonds, enabling up to quantitative conversion yields for reductive hydrodehalogenation reactions.