To remove the chromium from the
groundwater neem leaves is used as the adsorbent. The column study was conducted to determine the effect of adsorbent to remove the chromium concentration from the ground water. To investigate the influences of bed height on the performance of chromium adsorption on to the neem leaves in a fixed-bed column. The results
reveal that the concentration of chromium is high near the tannery industry in Chrompet so the study concluded that usage of groundwater in Chrompet should be avoided.