Flood prevention and sewerage are highly mechanised and automated services that utilise the latest high-performance computerised controllers and IT networks. For a growing number of public water authorities, the versiondog data management system from AUVESY has significantly improved the process of keeping track of the associated data. Although the primary purpose of versiondog is usually to provide change and data management, it is also helping German water authorities fulfil the requirements of the country's IT Security Act 2015, especially with regard to ICS systems.