Water is a precious resource that is essential for human survival and economic development. However, the availability and quality of water resources are increasingly threatened by factors such as climate change and population growth. The circular water economy provides a sustainable approach to managing water resources, which emphasizes the conservation and reuse of water resources. This issue of Mark and Focus explores concepts related to the circular water economy, including innovative technologies for water treatment, circular water economy in agriculture, and mitigating the impact of climate change on water resources. By promoting the circular water economy, we can ensure the sustainable management of water resources and support the achievement of sustainable development goals
