Iran Energy Minister: World Water Demand Will Rise by 20% by 2050

The world's need for water will be 20% over and above   current consumption levels by 2050, said the Energy Minister.
Speaking in Tehran at the weekend, Reza Ardakanian said, “Given the global population growth, demand for food will increase by 50% compared to the consumption now. Producing such higher volumes of food will demand 20% more water and 10% more land. 
This is while the Earth's surface will not change and water resources remain limited,” the IRIB News Agency quoted him as saying.
Referring to the chronic water crisis as a global challenge, which is not limited to the arid and semi-arid countries, the minister said both the developing and developed world is severely affected (to varying degrees) by the worsening water crisis.