Potable water is often used as a water source by various industries. Either as untreated or treated, in order to meet production specifications (Karakul ski et al., 2002). In the metal finishing industry, potable water is generally used during the rinses of organic solvents, alkaline and acidic solutions, whilst deionised water is employed during the plating rinse and final rinse. The water in the rinsing baths becomes contaminated during the cleaning or plating process due to the accumulation of contaminants from repeated bathing cycles. The contaminants may include oil, grease and other organic compounds, heavy metals such as chromium, copper, zinc.lead, nickel and iron, as well as other cations and anions, depending on the cleaning or plating process (Qin et al., 2010).