From WaterCad web page:

WaterCAD is a complete geographic information management system for your water utility in a cost-effective package that saves you money each time you use it. Analyze water quality, determine fire flow requirements, calibrate large distribution networks and more with WaterCAD’s powerful hydraulic analysis tools. WaterCAD is a sophisticated tool that enables engineers and decision makers to analyze and manage distribution networks with unprecedented accuracy and efficiency.

WaterCAD homepage