Water management options for more food security in Palestine were evaluated using WEAP simulation model. A water management structure consisting of eight interrelated modules covering all aspects of water management was used. Three potential future political scenarios were tested: the current, a consolidate, and an independent State order. Simulations indicated that political status has decisive impact on water availability and the level of unmet demand and accordingly on present and future food security in Palestine. Water management, water trading, and water cost modules resulted in reductions in future water demands and therefore have positive impact on food security in Palestine.