Ann-Sofie Hermansson, Mayor of Gothenburg from IWA on Vimeo. Ann-Sofie Hermansson, Mayor of Gothenburg, on how the IWA Principles for Water-Wise Cities will help the city of Gothenburg to walk the extra mile in sustainable water management during a transformative era, marked by the additional challenges posed by urbanisation, climate change and population growth. Learn more about the Principles for Water-Wise Cities: iwa-network.org/projects/water-wise-cities/