While food security is a concern for all, what receives limited attention is that practically 70% of freshwater withdrawal at the global level is for irrigated agriculture. In LDCs this figure can be even more than 90% (FAO, 2011).Facing the competition from other sectors and due to more severe climatic variations and effects of climate change, water availability for agriculture is already limited and uncertain in several regions. This is set to worsen. Consequently, it is no longer enough to just think about the amount of water we need to grow food but we must also look at the way water is used from production to consumption. Unsustainable water and land management practices to boost agricultural production have caused wide-scale changes in ecosystems and negatively affected the quality and quantity of water. The external cost of the damage to people and ecosystems and clean-up processes from the agricultural sector is significant.