This paper identifies opportunities from targeted and integrated sanitation action to achieve the Sustainable Development Goals (SDGs). This is contextualised to the case of Brazil through a systematic approach applied to the sanitation sector that considers the range of infrastructure, management services and people involved in different phases of the service chain, from municipal wastewater containment to safe disposal or re-use. Articulating the social, economic and environmental dimensions of sanitation, this study analyses their links with each of the 169 SDG targets. We demonstrate that 87 targets across 16 goals require action in Brazil's sanitation sector to achieve the SDGs. Furthermore, we identify synergies between sanitation and 124 targets in four domains: basic services for resilience building, equity and

Highlights COVID-19 has exposed service gaps in Water, Sanitation and Hygiene (WASH) in informal settlments in cities. The vulnerability of informal settlements to COVID-19 is not accidental, but a result of the type of cities that were built. The Sustainable Development Goals provide a framework for integrated actions in WASH benefitting other sectors. Partnerships for interventions must consider scalar dynamics with different responses taken at different governance levels.

Global challenges such as climate change, resource scarcity and poverty must increasingly be tackled in cities. While cities can be significant contributors to climate change and resource scarcity, and face considerable risks as a consequence of these, they are also central to the solutions for these challenges. The quality of infrastructure, reliability of service provision and other economic and political conditions in urban areas shape levels of resource use by, and exposure to risks for, residents. This paperwhich introduces a special issue on resilience and resource efficiency at the city scaleintroduces these two concepts and explores the nexus between them. It uses several case studies from different contexts to illustrate the relationship between these ideas, and describes how the papers in the issue engage with them.

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Better understanding of the range of opportunities that can be leveraged from the sustainable and inclusive management of sanitation services is required, alongside the evidence to support it. The Sustainable Development Goals (SDGs) provide a comprehensive framework for sustainable development broken down into 169 Targets articulated under 17 interconnected Goals. Based on a methodology developed at University College London (UCL), this study identifies linkages between sanitation and each of the 169 Targets on the basis of published evidence. We show that there are synergies between sanitation and 130 (77%) of the Targets and trade-offs for 28 (17%) of the Targets. With synergies with all the 17 Goals we identified 83 Targets (49%) that call for action in the sanitation sector. The results demonstrate the far-reaching benefits that can be unlocked from investment in sanitation, which extend beyond health and spread across sectors. This seeks to provide the evidence base to inform strategic investment in sanitation and particularly by integrating sanitation interventions into collaborative cross-sectoral development efforts. The research provides different stakeholders, including policymakers, funders, practitioners and researchers, with a framework that can be applied to context specific cases and projects. We propose a range of recommendations to policy-makers, practitioners, and researchers who seek to take this study further to support delivery of sustainable and inclusive sanitation services for all.

To better leverage opportunities arising out of sustainable and inclusive management of sanitation services there is a need for robust and comprehensive evidence of the wide-ranging benefits that sanitation can deliver. The Sustainable Development Goals (SDGs) provide a comprehensive framework for sustainable development broken down into 169 interconnected Targets which are articulated under 17 Goals. Based on a methodology developed at University College London (UCL), this study identifies linkages between sanitation and the 169 Targets corroborated by published evidence. We show that there are synergies between sanitation and all 17 Goals and 130 (77%) of the Targets, and trade-offs for 28 (17%) of the Targets. We identified 83 Targets (49%) that call for action in the sanitation sector. The results demonstrate the far-reaching benefits that can be unlocked from investment in sanitation, which extend beyond health and spread across sectors. The evidence base for the 17 Goals establishes links that can inform cross-sectoral action, collaborations and investment across governance levels for integrated sanitation solutions. The research provides different stakeholders with a framework that can be applied to context-specific cases and projects. We propose a range of recommendations to policy makers, practitioners and researchers who seek to take this study further to help achieve the SDGs.

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