Groundwater is a significant source for drinking water in our country. This water is contaminated with various minerals of which arsenic and manganese can be specially mentioned. ITN-BUET has conducted a number of researches on arsenic issue. In continuation to that, a research on “Removal of Manganese and Arsenic from Groundwater Using Manganese Oxide Coated Sand” was conducted by ITN-BUET. This publication is the outcome of that initiative. Promotion of technologies for removing arsenic is one of the important policies of Government for providing safe drinking water. The focus of the present study was on removal of both arsenic and manganese from groundwater. It is expected that this publication of ITN-BUET will be an important reference for research and development activities of the government, non-government organizations, development partners and other agencies working in the WSS sector especially on arsenic issue. In addition this publication will also be useful to the scientists, researchers and sector professionals to undertake further research works to enrich the knowledge base in this particular area.