A process to purify wastewater that comprises the steps of passing the wastewater through an electrocoagulation cell which comprises a plurality of reaction plates or electrodes (6) disposed within said cell and spaced apart from each other, whereby said wastewater is treated by passing an electric current through the wastewater to thereby produce purified water (8); re-using said purified water for cleaning or other purposes to produce wastewater; and recycling (3) the wastewater back to the electrocoagulation cell. The wastewater may be obtained public or household showers, sinks, basins, baths, washing machines, dishwashers, kitchens or car washes.