الفهرس 
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Abstract
Reuse of drainage water seems to be one of the most promising, practical and economical means of increasing the Egyptian water budget. However reuse of drainage water has its limitations. Available informa¬tion shows that the river Nile, its branches, canals and the drains are suffering from an alarming increase in the pollution through wastewater. The drainage system particularly is receiving the heaviest pollution loads. The major sources of water pollution are agricultural chemicals (Salts, nutrients and pesticides) municipal and rural domestic sewage and industrial wastewater. This is the present situation in Egypt, where dependence on the Nile system makes management of its quality as import¬ant as management of its quantity.
The water quality of water resources is a subject of ongoing concern. The assessment of the short and long term water quality changes is also a challenging problem. During the last decade, there has been an increasing demand for monitoring water quality in Egypt in order to provide the policy makers decisions with the information needed to help them manage the water resources without harmful effect for the environment.
The main objectives of this research are to:
Characterising waters and detecting trends for drainage water quality and quantity data. The data for Edko drain will be used as a case study.
Investigate the variability of both water quantity and some water quality parameters with time using statistical techniques.
Detect the general trends for the water quantity and some water quality parameters with time using simple statistical methods.
Compare the water quality of the drainage water in EdKo drain with the local and international water quality standards.
Assess the drainage water quantities which officially and unofficially reused.