In recent years, an interesting issue attracting water resource managers and planners is water demand management. In this field, there are several approaches where the most efficient and effective one is considering the economic aspects, including water markets. Water market mechanism, a useful tool for developing decentralization, is considered as the optimal allocation of water resources between consumers, and decreasing the effects of water shortage. Achieving such positive aspects is possible by establishing social, legal and technical structures. After establishing social and legal structures, providing an appropriate technical infrastructure is essential for entering applicants to water market. Therefore, this research aims to implement technical infrastructure for organizing water market in 5 neighboring farms. In this study, using positive mathematical programming model and using information like input water volume per month (surface water and groundwater), amount of requirement to different input for each product, product performance, input costs, farms distance and monthly net water requirement of each product, a new cultivation pattern and rate of transmitted among farms per month has been determined. For evaluating different technical methods for underground water transmission, associated costs of two transmission approaches, surface pumping and shared aquifer, are considered as input to the model. Existed canals which do not have any technical costs, are used to transmit surface water. The objective function consists of maximizing farmer’s profit and constraints consist of water, farm and stock constraints. In this study information of the farming year 90-91 are used and results are obtained using GAMS software package. In this study, the model is implemented and executed using two climate scenarios: normal and drought. In the normal climate scenario, the amount of water available for farmers equals to their water rights defined in the legal document. However, in drought climate situation surface water subtracted the legal water rights. Results show that after creation of market, farmer return in normal climate scenario increases 4 percent comparing to base situation. The amount of this increase for drought climate scenario is 28 percent. Also, results show that in the normal climate scenario 86 percent of the total water is surface water and the other 14 percent is underground water which transmitted using pomp and pipe. In drought climate situation where there is no surface water, 62 percent of underground water is exchanged using technical method of pomp and pipe and the other 38 percent is exchanged using shared aquifer. Also volume of exchanged water in the market in normal climate scenario is 9 percent of consumption water. This amount is 47 percent in drought climate situation which shows the high cooperation of farmers in market in order to allocate water more efficient in this scenario. Keywords : Water Market, Shared Aquifer, Surface Pumping, Economic Aspects, Technical Costs