Activated Carbon is a solid material consisting mainly of pure carbon and is the most powerful adsorbent. Its characteristic feature is the porous structure, and the resultant vast surface area, which may be as large as 1500 m2gm., Coconut Shell based Granular Activated Carbon is widely used in the water purification process plants, due to its exceptional adsorption qualities. The benefits of using Coconut Shell based Granular Activated Carbon are low cost and higher efficiency in water treatment, such as removal of odor, color and recuperation.