USAID develops a Needs Index score for all Independent States in the World and any additional geographies in which USAID works. For each of these countries and geographies analyzed, USAID accesses the latest available data for the eight criteria identified in section 136(f)(1)(A)-(H) of the FAA, with some minor revisions needed to ensure alignment with the Sustainable Development Goals. Additional details on these metrics, data sources, and notes are available in Annex B of the Global Water Strategy.
Once data have been compiled, USAID “normalizes” the score for each metric, or gives each country a relative score between 0 and 1. To do this, USAID assigns the lowest score for each metric a value of zero and assigns the highest score for that metric a value of 1, with all others given a value between the minimum and maximum. The overall Needs Index score is calculated by averaging the relative scores for all eight metrics for each country. Each of the eight metrics are weighted equally. If data for any of the eight metrics are missing, no Needs Index score is calculated.
WASH Needs Index
Below is the WASH Needs Index data from 2021. You can view WASH needs data for each indicator by clicking on a colored cell in the table below.
Colors represent the degree of WASH needs as depicted in the scale above the table.
WASH Needs Index Scale
|Country||Rank||Overall Needs Index Score||% without basic water||# without basic water||% without safely managed water||% without basic sanitation||# without basic sanitation||% with open defecation||% of < 5 mortality due to diarrhea||# of < 5 mortality due to diarrhea|