The Global Water Footprint

Agricultural water use per nation

Domestic water use per nation

 

Industrial water use per nation

 

"So the concept of water footprint is essential to help societies understand their global impact on this resource and the need for conservation and management. And in this domain, the main culprit is agriculture, as the Worldwatch Institute article states:  

'Agriculture has the greatest impact on a water footprint. Global crop production requires more than 6 trillion cubic meters of water each year, with nearly a quarter of supplies flowing to rice paddies. Livestock production requires the most water resources in the food chain. One hamburger, for instance, needs 2,400 liters of water on average.'"

Source

Even though I posted some days ago a world map that indicates the nations in Africa and South-East Asia as the ones with the highest proportion of total water withdrawal that is withdrawn for agriculture, we have to keep in mind that their withdrawal is nothing compared to what the industrialized countries consume.