This report is a synthesis of the debate that took place with Dr. Kevin Winter in the conference series "Facing climate change", organized by the Catalunya Catalunya Foundation as part of the Re-City project. This session, entitled "War on water and nexus with energy and social justice" consisted of a public conference, a seminar with participants from the academic sector of Catalonia and a luncheon-debate that brought together figures from the economic sector, social, political and business of Catalonia.