The Water, Sanitation, and Hygiene (WASH) Performance Index is a comparison of country performance in realizing universal WASH. The WASH Performance Index assesses performance in the following components: water access, water equity, sanitation access, and sanitation equity. The top five performing countries in the 2015 WASH Performance Index rankings are El Salvador, Niger, Egypt, Maldives, and Pakistan. The bottom five performers are the Dominican Republic, Gambia, Ghana, Samoa, and Timor-Leste. Progress toward equity in sanitation is significantly associated with governance indicators including control of corruption, government effectiveness, regulatory quality, and rule of law. These results suggest the enabling environment for WASH contributes to progress in sanitation equity. (Link)
Cronk, R.; Luh, J.; Mason Meier, B.; Bartram, J. 2015. The WASH Performance Index Report. University of North Carolina (UNC) Gillings School of Global Public Health Water Institute, Conrad N. Hilton Foundation. Web Publication [Accessed in January, 2017].