The broad consensus on the effective management of water resources is related to the consideration of water as an economic resource, as argued in the Document of the Intemational Conference on Water and environment, which states that" water has value economic development in all its competing uses and should be recognized as an economic good" is because water is a finite resource and must be recoverable and allocated according to criteria of efficiency and equity, ie the water in addition to being an economic good is also a social and environmental. The valuation of water, useful and have implications for policy on water resource management, and recognition of activities in which the value of water is high or low? and the factor and characteristics of the uses for that water is used. There is currently a discussion between the importance of the value of water and water costs, the value of...