الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Water is not only a resource, it is a life source. Water is useful for several purposes including agricultural, industrial, household, recreational and environmental activities. Water purity can have a great influence on the ability of aquatic plants and animals to exist and grow, which in turn affects human health since it can carry toxins and bacteria, as well as having unpalatable taste or disagreeable odor. Pollution can be defined as the addition of either harmful or excess harmless substances to the environment. The main cause of water pollution is the discharge of solid or liquid waste products containing pollutants into the aquatic habitats. The continuing growth in industrialization and urbanization has led to the natural environment being exposed to ever increasing levels of toxic elements, such as heavy metals.