alternet logo

Tough Times

Demand honest news. Help support AlterNet and our mission to keep you informed during this crisis.

New Treaty Aims to Protect Shared International Groundwater

PARIS, France, October 23, 2008 (ENS) -- Underground aquifers contain 100 times the volume of fresh water found on the Earth's surface but they have been neglected under international law despite their environmental, social, economic and strategic importance.

On Monday, that will change as the UN General Assembly receives the draft of a new international treaty to safeguard these enormous pools of underground water shared by more than one country.

The draft Convention on Transboundary Aquifers applies to 96 percent of the planet's freshwater resources -- those that are to be found in underground aquifers, most of which straddle national boundaries.

Many shared aquifers are under environmental threats caused by climate change, growing population pressure, over-exploitation, and human induced water pollution.

The draft treaty requires that aquifer states not harm existing aquifers and cooperate to prevent and control their pollution. Prepared over the past six years by the UN International Law Commission with the assistance of experts from UNESCO's International Hydrological Programme, the treaty is intended to fill a gap in the law.

To accompany the draft treaty, UNESCO is publishing the first-ever world map of shared aquifers. It shows the aquifer locations and provides information about the quality of their water and rate of replenishment by rainfall.

So far, the inventory includes 273 shared aquifers -- 68 are in the Americas, 38 in Africa, 65 in eastern Europe, 90 in western Europe and 12 in Asia.

The growth in the demand for water since 1950 has been met by the increased use of underground resources. Globally, 65 percent of this water is devoted to irrigation, 25 percent to the supply of drinking water and 10 percent to industry.

Underground aquifers account for more than 70 percent of the water used in the European Union, and are often the only source of supply in arid and semi-arid zones.

Aquifers supply 100 percent of the water used in Saudi Arabia and Malta, 95 percent in Tunisia and 75 percent in Morocco.

Irrigation systems in many countries depend very largely on groundwater resources -- 90 percent in the Libya, 89 percent in India, 84 percent in South Africa and 80 percent in Spain.

One of the largest aquifers in the world is the Guarani Aquifer, extending over 1.2 million square kilometers, shared by Brazil, Argentina, Paraguay and Uruguay.

Although aquifer systems exist in all continents, not all of them are fed on a regular basis by rainfall. Those in north Africa and the Arabian peninsula were formed more than 10,000 years ago when the climate was more humid and are no longer replenished.

In some regions, even if the aquifers are renewable, they may be endangered by over-exploitation or pollution. In the small islands and coastal zones of the Mediterranean, people often use groundwater more rapidly than it is replenished.

The aquifers in Africa, which are some of the biggest in the world, are still under-exploited, the UN agency says, adding, "They have considerable potential, provided that their resources are managed on a sustainable basis."

Since they generally extend across several national boundaries, the sustainable use of African aquifers depends on agreed management mechanisms that will help prevent pollution or over-exploitation.

Mechanisms of this kind have begun to emerge. In the 1990s Chad, Egypt, Libya and Sudan established a joint authority to manage the Nubian aquifer system.

In their project concerning the Iullemeden aquifer that extends over 500 000 square kilometers in the semi-arid tropical savanna ecoregion of West Africa, Niger, Nigeria and Mali have approved in principle a consultative mechanism for administering the aquifer system. UNESCO says such mechanisms still are rare but the new treaty may encourage their formation.

Copyright Environment News Service (ENS) 2008. All rights reserved.

Enjoy this piece?

… then let us make a small request. AlterNet’s journalists work tirelessly to counter the traditional corporate media narrative. We’re here seven days a week, 365 days a year. And we’re proud to say that we’ve been bringing you the real, unfiltered news for 20 years—longer than any other progressive news site on the Internet.

It’s through the generosity of our supporters that we’re able to share with you all the underreported news you need to know. Independent journalism is increasingly imperiled; ads alone can’t pay our bills. AlterNet counts on readers like you to support our coverage. Did you enjoy content from David Cay Johnston, Common Dreams, Raw Story and Robert Reich? Opinion from Salon and Jim Hightower? Analysis by The Conversation? Then join the hundreds of readers who have supported AlterNet this year.

Every reader contribution, whatever the amount, makes a tremendous difference. Help ensure AlterNet remains independent long into the future. Support progressive journalism with a one-time contribution to AlterNet, or click here to become a subscriber. Thank you. Click here to donate by check.