Access to safe and affordable water, resilience to climate risks, and participation in decision-making are three pillars to achieve equity and justice in water systems. Factors such as environmental degradation, institutional failures, deficient supply systems, and socio-economic disparities can drive inequitable water access especially for marginalized and under-resourced communities in both urban and rural areas. Climate change further intensifies these challenges by increasing frequency and intensity of extreme events and straining water infrastructure. Addressing these disparities necessitates reimagining water systems and the management of water resources to ensure outcomes that are equitable, inclusive, and resilient to climate change and other anthropogenic pressures. In this session, we invite contributions that advance community-driven water research, computational methods to support just decision-making, resilient and adaptive water planning and management, and equitable water governance. Together, we aim to explore actionable pathways towards more equitable and just water systems.