Planning should be based on the natural boundaries of the resource. Aquifers rarely respect administrative or natural boundaries. In cases where aquifers cross international boundaries treaties or other international conventions may be required. Ground water planning should reflect a co-ordinated effort between agencies involved in all aspects of ground water. Full protection of ground water resources is rarely practicable, priorities must be carefully targeted.
Water is a universal solvent.
It is a common link among humanity. Water has no geographical boundary, and does not distinguish colour, creed, religion or race, so it is like universal ethics. Ground water is used in irrigation, industry, domestic households and for maintaining livestock. About 450 cubic km of waste water flow into rivers and streams every year, and about 6000 cubic km of clean water are needed to dilute this dirty water and clean it up enough to make it reusable. Those who suffer most from this scarcity are the world fs 1200 million poor people of whom nearly 800 million are still undernourished.