The following conclusions are drawn: 1. The rate of infiltration is highest for Budhabalanga river soil sample for soil depth of 50 cm. This indicates that prior to carry out any experiment, the infiltration rate should be studied. 2. Two types of low cost activated carbons (RHAC and SBAC) were used for the analysis and both provided good results, when place at the centre of the soil column. 3. Further improvements in low cost technologies required so that it can be used as commercial filters by poor and common people.