Virtual water refers both to water consumed during the process of production and water remaining as the constituent of the product. Apart from its quantity, easily calculated, it can also be determined in qualitative terms, through the water footprint, which describes the amount of water used by any biological entity. It can be presented as three-portion system, comprised of blue, green and gray water. The attempts to solve agricultural problems in the countries suffering from water shortage, the importance of green water has been emphasized, pointing to adequate water management. Virtual water concept enabled understanding of the international water trading ways, as it remains within the products traded. Adjusting export oriented food production any country can save significant amounts of domestic water, thus implementing its water sustainability that is important for all the countries. Since large quantities of good quality water for agricultural irrigation are the utmost requirement, it is often a limiting factor, implying that new methodology of water-food transformation should be developed