This chapter urgently delves into the intricate relationship between ecosystem resilience and water resources, a topic of immediate importance in the face of climate change. It underscores the vital role of ecosystems in upholding water availability and quality. Ecosystems function as natural infrastructure by regulating hydrological cycles, mitigating floods and droughts, and purifying water. This enhances the resilience of both natural and human communities. Understanding and utilising these ecosystem-water connections are pivotal for efficient water resource management and climate adaptation strategies. This chapter draws on insights from various fields to summarise existing knowledge and inspire new methods to leverage ecosystem resilience for sustainable water resource management in a changing climate, emphasising the immediate need for attention and action in this crucial area.