الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Water is a source of life and regarded as the most essential of natural resources and an important requirement for the survival of human beings. Water is a unique substance, because it can naturally renew and cleanse itself, by allowing pollutants to settle out (through the process of sedimentation) or break down, or by diluting the pollutants to a point where they are not in harmful concentrations (Bahram & Soheila, 2014). However, this natural process takes time, and is difficult when excessive quantities of harmful contaminants are added to the water. The amount of fresh water on the planet is constant, the major challenge facing Egypt now is that of developing and managing better the very limited natural resources of water to meet the needs of a growing population.