This problem is particularly acute in urban areas as the share of city dwellers without access to treated water actually increased between 1990 and 2008. The share of people without access to treated water is also expected to increase in sub-Saharan Africa, where the Millennium Development Goal for improved water supply is unlikely to be met (Figure 2.6). Worse still, nearly 1.4 billion people are expected to have no access to basic sanitation services in 2050 (Figure 2.7) (OECD, 2012a).