This TAB report focuses on the use of digital solutions for central tasks in municipal waste and water management. For both areas, the report provides information on the status quo and the prospects for digitisation. For water management, the report examines the potential benefits of digital solutions for dealing with exceptional situations. It also discusses the vulnerability of water supply infrastructures to cyber-attacks and other IT-related disruptions, and identifies the current state of information security and the need for action. Finally, it outlines options for action and provides a possible framework for policymakers to shape digital progress in a sustainable way.