Waterworks/ˈwɔːtərwɜːrks/ Definition 1 of 3Pro Tip 1/3Technical Term Used in engineering or municipal conversations about water supply systems. The engineer presented an upgrade plan for the waterworks. Pro Tip 2/3Local Infrastructure Often refers to the network of pipes and facilities in a specific place. Our town's waterworks are over a century old. Pro Tip 3/3Public Concern Discussion about waterworks can involve public interest or issues about water safety. The waterworks issue was raised at the city council meeting.