Iron a common household element which occurs as minor constituent of ground water in all categories of hydro-geological settings in Assam. More than eighty percentages of rural populations of Assam depends on ground water resources for drinking and irrigation purposes so appropriate technologies are needed for purification of groundwater to enable safe use. Conventional methods of iron mitigation are cost effective and difficulty exists in its procurement in developing countries like India. Use of sand, pebbles, charcoal and lime in their common water filtration system by rural people of Assam, known as Sand Filter (SF), is an indigenous technique. A study has carried out in the common indigenous water filtration technique, using four different bamboo charcoals Bambusa balcooa, Bambusa nutans, Bambusa tulda and Bambusa Padilla separately for iron removal. Iron adsorption by different bamboo charcoals in the modified rural SF at bulk volume, revealed that the maximum removal for iron were 74.24%, 59.46%, 64.53% and 56.37% for B balcooa, B nutans, B tulda and B padilla respectively at pH greater than 7.5, when iron concentration ranges (0.3-4) mg/l at room temperature. Efficiency depends on contact time with bamboo charcoals. The study reveals that all the four types of bamboo charcoals were effective in iron removal from water, however charcoals from Bambusa balcooa is more capable of bringing iron levels decreases to desirable limits.