Sewage treatment is the process of removing contaminants from municipal wastewater, containing mainly household sewage plus some industrial wastewater. In the sewage treatment plant major 5 process where happen on it. The major first one is Flotation, Electro coagulation, Electro oxidation, Ultra filtration & Electro chlorination. These processes are used to remove contaminants and produce treated wastewater that is safe enough for release into the environment. By the way we are differentiate from the chemical & biological, because we are using only electrolysis method to treated water to use for reuse. These treated water we can directly use for gardening, flushing, vessel washing. In the sewage treatment method used by application of Electrolysis method.