Note: This is the 1997 edition of UNEP's Global Environment Outlook. If you are interested in more recent information, please see the 2000 and 2002 editions.

Figure 4.23. Availability of fresh water, assuming conventional development: number of people by availability of fresh water.

RIVM/UNEP (1997); Klepper et al. (forthcoming).
In 1990, 0.3 billion people lived in extremely low population-density areas that are not included in this study. In 2015, this figure is projected to increase to 0.5 billion; in 2050, to 0.7 billion.