However, the operational agreements and the joint bodies established were diverse and demonstrated that while based on principles of customary law, there is no universal solution for what these should look like. Countries reported barriers to reaching agreement. However, some actions are much less visible.' Today, as the demand for fresh water increases, awareness is focusing on ensuring that the limited capacity of the natural environment to sustain the multiple services that society has come to rely on is maintained, Water-related ecosystems underpin other SDGs, and yet they also depend on them, particularly those relating to food and energy production, biodiversity, and land and sea ecosystems.