Access to sanitation refers to the percentage of population with at least adequate access to excreta facilities (private or shared, but not public) that can effectively prevent human, animal, and insect contact with excreta. Access to improved sources of water refers to the percentage of population with reasonable access to a permanent source of safe water in their dwelling or within a reasonable distance from it. Regional estimates for both indicators are computed using country data covering 97 percent of developing countriesâ€™ total population. All regions but Sub-Saharan Africa and the Middle East and North Africa are on track to achieve the water access target, based on current trends. Prospects are bleaker for the sanitation access target, with only the Middle East and North Africa on track and Sub-Saharan Africa and South Asia lagging far behind.