The paper deals with determination of the economic elements of water management, which reflect the specific foundations, processes, principles and goals that are determined by the water policy. In terms of services, this represents the economic valorization of the foundations in manageable and unmanageable technical and natural systems, in which processes take place to bring water to a certain target quantity and quality, as well as provide safety against water in time and space. The use of, and protection against water, are under the pressures and influence of natural climatic and soil factors, the balance condition of surface and groundwater, and in particular human activities and demands for the characteristics of water in a water body, water area and in the river basin. These factors influence the demand for services, which also depends on the available domestic product, its volume of use, tastes and preferences. The offer consists of services for a particular quantity and quality of the available water, and for a certain degree of safety from the harmful effects of water, which are achieved by the employees of the functional facilities and systems. Together with the activities of the association, population and public services, the use of, and protection against water make up the totality of water management. It requires a decision process in all of the functions involved in planning, organization, management and control. Water management is identified with the water policy and activity, although there is a difference between them. The first is represented by a decision-making system in planning, organization, management and control, while the second is represented by the activity systems of government in the field of protection against water, as well as the protection and use of water. The activity consist of certain services which are performed by the employees of the companies, through the provision and performance of water management services in various time and space, in accordance with the offer and the demands of the users.

Serbia has a large number of various and for the application convenient mineral and spring waters for using. It is wide base that makes possible to develop practically everything that is abroad known for the application and perspectively possible. Serbia has well developed bottle industry of high quality mineral waters. Present and future seek, and Serbia has great chances to develop a new program production the world highest quality oligomineral waters, with the exclusive chemical composition, ecological safety and origin, suitable for everyday use drink and making food. In that aspect have been finished first completely new experiments and obtained the world significant first results, that are promising new program of production food naturally enriched with essential microelements in the most suitable chemical form for physiology of nutrition. The main aim in research theory and particularly practical application of marketing concept in increment sale of the mineral waters, is to analyze them in details and to use them as the basis for the suggestion of the appropriate measures and activities to help the manufacturer of the mineral waters, to incorporate the marketing concept as the way of business organizational and business strategy.

The paper shows available water resources potential of karsts spring waters of Carpatho-Balkan region of east Serbia. Basic elements of water balance are also given, as well as quantitative indicators of low flows. Karsts spring yield is compared to the domicile waters of Serbia. We can also read certain comments and see an estimation maximum usage of these karsts waters.