الفهرس 
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Abstract
Drinking quality groundwater is a big concern in the New Valley governorate, Western Desert Egypt. The most problematic contaminant in the groundwater is iron. Soluble iron varies widely depending on the hydrogeological conditions, type of sediments, pumping period and depth of aquifer. Iron is the primary source for coloration problems in the drinking water distribution system. Water with a high concentration of iron may cause corrosion and staining of plumbing fixtures or laundry giving water an unpleasant appearance and taste. The removal of iron from groundwater is a common treatment step in the production of drinking water. The most commonly employed method of iron removal from groundwater is oxidation-floc formation which involves three basic processes, e.g. oxidation of ferrous iron by aeration, settling of the precipitate and iron removal. The system operated under aerobic condition promotes the oxidation of ferrous to ferric iron which removed by absorptive filter.