The document summarizes key findings from an OECD survey of water governance in cities. It identifies challenges related to the multiplicity of governmental and non-governmental actors involved in urban water governance, the complex interactions between cities and surrounding areas on issues like water quality and flood control, and the need for better policy coordination across water-related sectors like land use and energy. It provides opportunities for improved stakeholder engagement, rural-urban partnerships, metropolitan governance, and policy complementarities to help address these challenges.