“About 4 billion people already live in areas suffering from water stress. By 2030, ‘the world may face a shortfall in water availability of approximately 2,700 billion cubic meters,’ the bank reports, ‘with demand exceeding current sustainable water supplies by 40 percent.’ Though the bank tamps down speculation that countries will fight with one another for water, it warns that water scarcity could encourage other sorts of conflict and dislocation, such as civil wars.”
Source: The growing stress on the world’s water – The Washington Post