This research is focussed on understanding what urban water security means -a surprisingly elusive concept given the global shift from rural to urban living. We first make the case for a distinct urban water security definition. We then identify 25 unique water security definitions, of which three relate to the urban context but all with scope for improvement. Applying novel indices, we assess the prevalence, complexity and evolution of themes and dimensions within all definitions and find a stable spectrum of themes; but note a shifting emphasis towards environmental and social dimensions, away from quality and quantity of supply. Overall the definitions are becoming more comprehensive by simply listing more outcomes to be achieved. Instead of this 'shopping-list' approach, we propose a simplified urban water security definition with a focus on agreement of needs with community stakeholders, while using the themes to guide what the objectives might be.
Urban water security is a critical element of sustainable development, and sustainable water management requires a participatory and collaborative approach across all stakeholders. However, literature suggests that there can be diverse and potentially conflicting views within community and expert groups. This research aimed to understand the extent of views within a group of industry professionals on objectives, themes and definitions of urban water security. Using 22 semi-structured interviews with participants from Queensland Australia, we found that, for the group, the priorities for urban water security are water quality and human health, quantity of supply to meet efficient demand, and reliability and resilience of supply systems. We also found diverse views on the importance of sustainability, water-related hazards, environment and ecosystem health, affordability and risk, to water security in the urban context. We conclude that there is agreement within the water service provider group on priority needs, and suggest there is potential for community and service providers to agree on urban water security needs. The research findings support operationalisation of security concepts, highlight potential barriers to achieving urban water security, and provide insights for further engagement with urban water stakeholders.
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