Water problems within countries.

Regions and states of many large countries (such as India, China, and the United States) could also join the water-stressed category. Already, 19 major Indian cities face chronic water shortages, and India as a whole is expected to enter the water-stressed category by 2030 (Gardner-Outlaw & Engelman, 1997).

China, which has 22 percent of the world's population but only seven percent of all freshwater runoff, will be just above the 1,700 cubic meters per capita line that designates “waterstress.”