Illinois Plumbing Code Practice

What automatic safety feature should be included with all lavatory faucets for public use?

1. Temperature sensor

2. Flow restrictor

3. Water filter

4. Water mixing device

The correct answer is: Water mixing device

The correct answer is a water mixing device. Water mixing devices, such as thermostatic mixing valves, are essential automatic safety features that should be included with all lavatory faucets for public use. These devices ensure that the water temperature remains at a safe level to prevent scalding injuries. By blending hot and cold water to achieve a comfortable and safe temperature, water mixing devices help protect users, especially vulnerable populations like children and the elderly, from being harmed by excessively hot water. Temperature sensors, flow restrictors, and water filters are all important components in a plumbing system but do not serve the same purpose as a water mixing device in terms of safety when it comes to preventing scalding incidents.