This conclusion presents some closing thoughts on the concepts covered in the preceding chapters of this book. The book addresses the fascinating developments in the application of the public trust doctrine. It focuses on the utility of water markets, one of the most polarising areas of water management. The book also focuses on the importance of stakeholder involvement in improving effectiveness, efficiency and inclusiveness with respect to water management. It analyses the development of law and policy regarding contaminants of emerging concern and legal responses to the perennial challenge of flood management. The book examines the role that law has to play during droughts, recognising the significance of equitable apportionment among users as a way of spreading the burden and incentivising efficiency measures. It illustrates the importance of transboundary waters to almost all countries of the world. The book emphasises the importance of joint institutional arrangements for the governance of transboundary waters.