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 The daily drinking water requirement per person is 2-4 litres, but it takes 2 000 to 5 000 litres of water to produce one person's daily food.
Source: Food and Agriculture Organization of the United Nations (FAO)
It takes 1 000-3 000 litres of water to produce just one kilo of rice and 13 000 to 15 000 litres to produce one kilo of grain-fed beef.
Source: FAO
In 2007, the estimated number of undernourished people worldwide was 923 million.
Source: FAO
Over the period to 2050 the world's water will have to support the agricultural systems that will feed and create livelihoods for an additional 2.7 billion people.
Source: FAO
The extent of land under irrigation in the world is 277 million hectares, about 20 percent of all cropland. Rainfed agriculture is practiced on the reamining 80 percent of the arable land.
Source: FAO
The Intergovernmental Panel on Climate Change predicts yields from rain-dependent agriculture could be down by 50 percent by 2020.
 Due to climate change, Himalayan snow and ice, which provide vast
amounts of water for agriculture in Asia, are expected to decline by 20 percent by 2030.
Source: FAO
Irrigation increases yields of most crops by 100 to 400 percent, and irrigated agriculture currently contributes to 40 percent of the world's food production.
Source: FAO
Poor drainage and irrigation practices have led to waterlogging and salinization of approximately 10 percent of the world's irrigated lands.
Source: World Water Assessment Programme (WWAP)
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