Bringing clean water and improved sanitation to the billions who lack them is “not a question of money, it’s not a question of technology, it’s a question of governance, of commitment, will—all of those things. And that, in many ways, is the worst part of the world’s water crisis,” said Peter Gleick, president of the Pacific Institute, at the February 4, 2009, launch of The World’s Water 2008-2009: The Biennial Report on Freshwater Resources. Gleick began by showing No Reason, a short video produced by the Pacific Institute and Circle of Blue for this year’s World Economic Forum in Davos, Switzerland, which examined waterissues in several sessions.
What is the Water Crisis?
According to Gleick, the global water crisis comprises many problems, including:
The failure to meet basic human needs for water, which leads to diseases like cholera and typhoid;
Local water scarcity and resource depletion;
Contamination by industrial and human wastes;
The effects of climate change and extreme events;
Reduced production of food, goods, and services caused by water scarcity, poor water quality, or inequitable water allocation;
Ecosystem degradation and destruction; and
Threats to international, national, and subnational security posed by conflict over water.
Three Kinds of Peak Water
Because water is a largely renewable resource, we will not completely run out of water. However, Gleick warned that non-renewable water sources such as fossil aquifers are limited. Thus, “peak non-renewable water” could occur if we use fossil groundwater faster than it is recharged; by some estimates, 30-40 percent of today’s global agricultural production comes from non-renewable water, which will become increasingly difficult to extract, said Gleick. “That’s a real challenge from a food point of view, especially in a world that is going from 6.5 billion to 7 billion to 9 billion people.”
Eventually, we will also run up against the ecological and economic flow limits of renewable water sources, which include streams and rivers, Gleick said. And before either non-renewable or renewable peak water, we could reach “peak ecological water,” which occurs when using additional water “causes more ecological damage than it provides human benefit, and the total value of using more water starts to decline,” he explained.
China: Water Challenges Writ Large
China’s stunning economic growth in recent years has come “at an enormous environmental cost…to their air quality, to human health, and especially to water resources,” said Gleick. China’s water is over-allocated, poorly managed, and severely polluted by industrial and human wastes. Desertification in northern China is increasing rapidly, due to deforestation and the excessive withdrawal of groundwater. According to Gleick, some companies have cancelled plans to build plants in China because they cannot obtain sufficient water of high enough quality.