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Tag: Water supply

Water supply and sanitation coverage in Africa
The water supply situation in Africa is already precarious, and climate change is expected to exacerbate the problem. This graphic shows the amount of water supply coverage at the national level for Africa, and the amoun...
17 May 2005 - by Delphine Digout, based on a sketch by Philippe Rekacewicz; UNEP/GRID-Arendal
Freshwater use by sector at the beginning of the 2000s
The agricultural sector is by far the biggest user of freshwater. Analysis indicates that: - In the United States, agriculture accounts for some 49% of total freshwater use, with 80% of this volume being used for irriga...
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
Water supply per river basin in 1995 and 2025
Although the absolute quantities of freshwater on earth have always remained approximately the same, the uneven distribution of water and human settlement continues to create growing problems freshwater availability and ...
26 Jan 2009 - by Philippe Rekacewicz,February 2006
The coming water scarcity in Africa
In a few years from now, almost all sub-Saharan countries will be below the level at which water supply is enough for all. Even worse, most of them will be in a state of water-stress or scarcity.
26 Jan 2009 - by Philippe Rekacewicz (Le Monde diplomatique), February 2006
Freshwater resources: volume by continent
Glaciers and ice caps cover about 10% of the world’s landmass. These are concentrated in Greenland and Antarctica and contain 70% of the world’s freshwater. Unfortunately, most of these resources are located far from hum...
01 Oct 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
When the city harms its own water resources
In areas where surface water is not readily available (located far from areas of need), groundwater is the primary water source. Groundwater aquifers supply an estimated 20% of the global population living in arid and se...
01 Oct 2009 - by Philippe Rekacewicz
Qanat
A qanat is a water management system used to secure reliable water supply to human settlements or irrigation in semi-arid and arid regions. Probably originating in Persia, the qanat system has been adopted and developed ...
06 Dec 2010 - by Riccardo Pravettoni
Water supply and demand in Nairobi
The bulk of water supply for Nairobi comes from Thika, Sasumua and Ruiru Dams, as well as the Kikuyu Springs. Over time water supply for the city has failed to meet demand. The current estimated water demand for Nairobi ...
18 Mar 2011 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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