What is the maximum temperature that a water temperature limiting device should be adjusted to provide?

A water temperature limiting device is essential for preventing scalding and burns, especially in settings where vulnerable populations such as children and the elderly may be present. The International Plumbing Code establishes guidelines for these devices to ensure safe water temperatures are maintained in plumbing systems.

The appropriate maximum temperature setting for a water temperature limiting device is 120°F. This temperature is widely accepted because it strikes a balance between safety and comfort. Temperatures above 120°F can pose a significant risk of scalding; in fact, water at 140°F can cause third-degree burns in just a few seconds, which is why the 120°F limit is critical to safeguard users.

In some situations, such as in certain healthcare environments or industrial applications, higher temperatures may be needed for specific processes. However, for general residential use, the 120°F setting is designed to prevent accidental burns while still allowing for effective cleaning and sanitization when necessary.