Blinded by the ‘green-halo’? Equity in financing climate adaptation of urban sanitation

Adapting urban sanitation systems to changing climate conditions will require substantial investments. However, there is a gap in understanding the funding strategies for such adaptation measures, especially amid concerns that resilience measures might reinforce existing urban sanitation inequalities. Through cross-case document analysis and complementary key informant interviews, we examined the sanitation adaptation investments in eight cities, focusing on their funding arrangements and social and intergenerational equity implications. Debt financing of sanitation adaptation often relies on repayment through customer bills with only opaque considerations of the affordability for different socio-economic customer groups. The lack of appropriate accounting for the lifecycle costs of resilient infrastructure threatens to mortgage future generations. There is no convincing evidence that ‘greening’ of adaptation financing either shifts or redistributes the financial risk more equitably nor does it make the repayment of the investments substantially cheaper for customers. We conclude that a public sector funding approach is most appropriate to ensure social and intergenerational equity within climate-resilient sanitation systems.