The concept of water stress is relatively simple: According to the World Business Council for Sustainable Development, it applies to situations where there is not enough water for all uses, whether agricultural, industrial or domestic.
Defining thresholds for stress in terms of available water per capita is more complex, however, entailing assumptions about water use and its efficiency.
It has been proposed that when annual per capita renewable freshwater availability is less than 1,700 cubic meters, countries begin to experience periodic or regular water stress.
Below 1,000 cubic meters, water scarcity begins to hamper economic development and human health and well-being. Population growth in 2000, the world population was 6. 2 billion.
The UN estimates that by 2050 there will be an additional 3. 5 billion people with most of the growth in developing countries that already suffer water stress. Thus, water demand will increase unless there are corresponding increases in water conservation and recycling of this vital resource.
In building on the data presented here by the UN, the World Bank goes on to explain that access to water for producing food will be one of the main challenges in the decades to come.
Water is the most important thing in the world. In Africa more than 100 people die because of water issue. We need to find a solution.
أزال المؤلف هذا التعليق.
ردحذف