From InfoWorks WS web page:

InfoWorks WS (Water Supply), provides a comprehensive model management solution that will enable you to analyse and manage distribution network models more efficiently and accurately than ever before. InfoWorks WS may be configured as a component of a corporate Integrated Network Modeling Solution or as a standalone desktop application. The combination of a Relational Database, powerful Hydraulic engine and Spatial Analysis tools provides a single application that integrates flexible water supply network modeling with the requirements from asset management and business planning.

InfoWorks WS (Water Supply) homepage