An otherwise water-abundant area, the Paris metropolitan region is exposed more and more to episodes of drought. Increasing climate-change induced temperatures and rainfall variability add to growing socio-economic pressures exerted on the region's water resources. In this context, this report assesses the economic cost of future drought risk induced by climate change. It presents the findings from an assessment of the potential environmental and social impacts of future droughts, including an analysis on the readiness of the region to adapt to these rapidly rising changes. It provides concrete recommendations on how policies and practices need to adapt to maintain the level of drought resilience developed to date in the region.