This study on financial and economic analysis of ecological sanitation (ecosan) in Sub-Saharan Africa was financed by the Water and Sanitation Program (WSP). It focused on a comparison of sanitation technologies suitable for urban settlements.
The aim of the study was to compare ecosan with conventional sanitation systems in terms of financial and economic costs and benefits, in order to assist decision-makers and sponsors of development programs to make informed decisions about relative
merits of different types of sanitation. To achieve this, an analytical framework and a computer model were developed to assess and compare different technologies in terms of financial and economic Net Present Value (NPV).