Due to widespread water pollution with nitrate ion, methods to remove or lower the nitrate concentrations in water are needed. A novel route to reproducibly electrodeposit copper nano-films, from acidic media onto fluorine-doped tin oxide/glass (Cu@FTO) is described. The films involve elemental copper nanoparticles inside copper agglomerates of larger sizes. Within 2 h, at ambient potential (-1.8 V), the Cu@FTO electrode reduces aqueous nitrate ions (~40%) more effectively than the benchmark bare Cu metal sheet (~11%). The Cu@FTO is also more selective to N 2 production (~30%) compared to bare Cu sheet with only (~1.1%). Furthermore, the Cu@FTO effectively functions for 7 h and continues to bring down the nitrate ion concentration from 200 ppm to acceptable levels (less than 60 ppm), reproducibly in 5 attempts. The results are promising for future water de-nitration processes using easyto-prepare Cu@FTO electrodes, aiming at producing electrodes for continuous flow reactors at larger scale.