The document summarizes the IWA Water and Development Congress & 2019 highlights. It discusses that the congress (1) brought together over 90 countries and 120 institutions to translate international principles into operational policies, (2) promoted collaboration on holistic water policy reform, and (3) disseminated best practices. Key messages from 2019 included that regulators should enable but not unsafe innovation, address climate change, promote water recycling, and collaborate more. The next International Water Regulators Forum will be at the 2020 IWA World Water Congress in Copenhagen.