Bangladesh is the most vulnerable country to global climate change in the world and facing natural disasters at a regular interval. The coastal areas of Bangladesh have already started suffering severely from the effects of climate change. The coastal area is the biggest victim of natural disasters such as cyclones and floods. During cyclone Sidr, in November 2007 and cyclone Aila in May 2009, severe storm surges impacted the south-western coastal region of Bangladesh. The people are still suffering from drinking water scarcity. In some areas, the surface water is saline, whereas fresh potable underground water is available at different depths of 200-400 meters. However in some areas, especially in cyclone-affected coastal belt areas, even the underground water has been encroached by salinity, thus pond water is their only option.