Water is a natural resource, which is becoming increasingly rare on Earth
Water is a natural resource, which is becoming increasingly rare on Earth.
According to a UNESCO world report on water resources, presented Monday, March 19, 2018 and more than a quarter of the world’s population is already facing water shortages in dry regions.
But this major problem could affect more than half of the world’s population by 2050. At that time, 5.7 billion people could be facing a water shortage for at least one month a year.
Indeed, water needs around the world are increasing and should reach between 5500 and 6000 km3 by 2050. These could more than triple on the African and Asian continents, knowing that countries like China, India and Nigeria are already in water deficit.
The reasons are simple: the growing needs of industry, energy and the growth of the world’s population. According to UN forecasts, our Earth will be populated with 9 to 10 billion people by 2050, that is, many people who will need water to feed themselves, to wash themselves, etc.
But the authors of the Unesco report are worried about the use of water for agriculture, particularly by the development of irrigation. According to them, it is the “main driver of the depletion” of water deposits. In 2050, annual groundwater withdrawals will increase from 800 km3 to 1100 km3.
Moreover, experts warn that in addition to pumping more water for irrigation, the quality of the latter is deteriorating, due to the industry and agricultural chemicals used.