World Development Report 2021 - Map O.2

Map-Based on Nigeria's National Water Supply and Sanitation Survey 2015 in the Report: A Wake Up Call: Nigeria Water Supply, Sanitation, and Hygiene Poverty Diagnostic. Available at: http://hdl.handle.net/10986/27703
These heat maps provide estimates of access to water and sanitation at local. The following maps provide estimates at the state level. Geographic hotspots of inadequate access to improved sanitation are shown from the most severe (red) to the least severe (green) in terms of the percentage of the population in that area that meets an international benchmark for sanitation.