Water has the ability of dissolving and containing various substances. Fresh water from surface water or groundwater is utilized for industrial or domestic purpose, either for potable or non-potable use. Due to the intended purposes, a water treatment plant is needed to fulfil the requirements of treated water. In general, conventional water treatment plant usually consists of physical treatment (screening, sedimentation, flotation, filtration) and chemical treatment (pH adjustment, coagulation-flocculation process, oxidation-reduction process, adsorption process) [Kurita, 1985]. The degree of the complexity of the treatment plant also depends on the quality of raw water and treated water requirement. In industrial processing, water is used in numerous applications requiring likewise different qualities of water. Examples of different use are cooling water, water for rinsing and chemical production, boiler feed water, purified water, water for injection, etc. The growth in population, the increasing costs of treatment and distribution