Sri Lanka’s non-agricultural sectors are expected to experience a significant increase in water demand. This chapter examines the challenges of climate change and water governance on non-agricultural water use, with a specific focus on the domestic, industrial, and power sectors. It emphasizes the need for cross-sectoral collaboration and integrated water management approaches to ensure sustainable water use across the domestic, industrial, and power sectors. It recommends adopting innovative technologies such as water recycling, treatment, and real-time monitoring systems; enhancing water-use efficiency through conservation practices, awareness campaigns, and capacity-building efforts; and improving water governance through transparent, participatory, and accountable systems.