The amount of aid money for water and sanitation received per missing water and sanitation service is calculated as follows:
1: Adding the absolute number of people without access to an improved source of water to the absolute number of people without access to adequate sanitation in a country (1).
2. Dividing the net water and sanitation ODA (aid) received by this country (2) by this number
All of the 10 countries with the lowest access in water and sanitation received less than 5 USD of WASH AID per missing service each year, thinking of the lifetime of a service, that’s less than 100 dollars over 20 years to build and maintain the service.
To compare this with the need, the WASHCost calculation of a minimum benchmark cost for sustainable basic WASH services in developing countries revealed that the combined costs for the provision of most basic sanitation and water services would be between US$ 137 – 287 per person over 20 years (3).
These estimations do not include investments for the provision of Hygiene services.