Cities Cities are the future for humanity, but the failure to manage higher population density or climate change can result in a threat to resources – water, energy, food – and have a profound impact on human health and well-being, the environment and the economy. Water sensitive cities are great places to live, where innovation, social cohesion, creativity and culture flourish. To create sustainable water in cities, we need to share experience and knowledge, and track progress. The Cities of the Future programme harnesses the power of the IWA network to co-create solutions and join efforts to manage a city’s many waters in a sustainable and resilient manner, an approach endorsed by the IWA Principles for Water-Wise Cities.