Exploitation of deep waters and their vulnerability

Authors

1 PhD student of Watershed Science and Engineering, Faculty of Natural Resources, University of Tehran.

2 Master's student in Watershed Science and Engineering, Faculty of Natural Resources, University of Tehran.

3 Master's degree in Ecohydrology, Faculty of Modern Sciences and Technologies, University of Tehran.

Abstract

Global groundwater is a huge resource that stores about 100 times the water of all the world's lakes, provides 40% of the water for global agriculture, and provides drinking water for billions of people worldwide. Dependence on fossil groundwater to meet water needs is increasing as a result of increased groundwater extraction and deeper drilling in some areas. Deep waters are vulnerable to pollution. Therefore, considering the effect of 50% of fossil waters from contemporary pollution and taking into account the long time to renew them, the result is that if they are polluted, we need thousands of years to clean them. Understanding the global extent and depth of fossil groundwater resources is important because of their unique sensitivity to overexploitation, potential vulnerability to surface contaminants, potential vulnerability to geochemical contaminants, and isolation from contemporary climate change.

Keywords