The boundaries of the European Union extend far beyond Greece or Spain. Indeed, the EU territory includes eight regions that are geographically very distant from the European continent but that still form an integral part of the EU member countries they belong to. Known as the "outermost regions" (OMR), they are covered by EU law and the other rights and duties associated with EU membership. Although European Union policy and legislation apply to these territories, the treaties of the EU acknowledge possible derogations. These derogations would be particularly relevant in the water field. Indeed, since outermost regions do not share the same context (climate, water availability, basin superficies, etc.), they express the need for a development of specific water management strategies. Hence, developing specific strategies for water management in outermost regions and defining ways to finance and implement them effectively should become a top-priority of the European Union.