Is water scarcity just about thirst? That is, of course, the most obvious result of loss of water resources, as is the reduction in food production.
But losing water is also about directly losing jobs, and rowing back economic progress.
For the 2016 edition of the World Water Day, the UNESCO has brought out a report focusing on what it terms the 'water-jobs nexus'.
More than three-fourths of all jobs in the world (the total number of jobs is twice India's population) directly depend on water. This includes both the jobs in water management and infrastructure, but jobs in activities that need water as a primary input.
Both jobs and economic progress are at risk with water scarcity. A recent survey by the Carbon Disclosure Project found that a large number of businesses will see water-related risks within the next three years.
The World Economic Forum, in 2015, termed water crisis as the greatest threat facing the planet in the next decade.