Our research focuses on the analysis and optimization of urban structures and infrastructures, especially of the water supply infrastructure. Through our multifaceted portfolio of research projects, we have a broad overview of the current challenges that the urban water supply systems face. On the one hand, we study water supply of all city districts with a special focus on deprived urban areas (also known as informal settlements or slums) and their cost-efficient access to water. On the other hand, we optimize urban water supply infrastructures under the consideration of resilience and dynamic development of water demand. We study the water supply network as a part of a complex, interdependent system of multiple critical infrastructures and assess its ability to react to and recover from disruptions.