In the present study locally available, low cost Pineapple Peel has been used as a raw material in the preparation of charcoal at three different temperatures 3000C, 4000C and 5000C.Chemical Activation of the charcoal were done for enhancing its adsorption capacity by using 1N HCl solution. Physico-chemical characterization was carried out by using standard methods given by ASTM, CEFIC and BIS. The surface morphology was studied by SEM technique. Batch experiments were carried out to determine the effect of various parameters such as Adsorbent dose, Contact time and PH on water hardness removal efficiency of activated carbon using field collected water sample. The experimental results indicate that prepared activated carbon is suitable for removal of water hardness and hardness removal efficiency increases with the increase in contact time and adsorbent dose. The hardness removal efficiency of PPAC300 was found to be maximum in the pH range of 6 to 8.