Turki Kh Faraj

1. Introduction The Arabian Peninsula is one of the most water-scarce regions of the world [,] and, being part of this region, Saudi Arabia has not been an exception. Natural water supply in Saudi Arabia, regarding precipitation, remains low, and sometimes not a single drop of water is received in a whole year [,,]. Mainly, the country has relied upon underground water, or fossil aquifers, to meet its household, industrial, agricultural, and environmental needs [].