http://www.wsp.org/wsp/content/economic-impacts-sanitation
[Accessed: 01.11.2012]
The Economics of Sanitation Initiative (ESI) was launched in 2007 with a WSP study from East Asia, which sparked public awareness and Government action in several countries. ESI further analyzed the costs and the benefits of alternative sanitation interventions for various countries in Africa, East Asia and South Asia.