What is the maximum allowable temperature of water in a domestic potable water distribution system?

In a domestic potable water distribution system, the maximum allowable temperature of water is 180 degrees Fahrenheit. This temperature limit is set to ensure safety and reduce the risk of scalding for individuals, especially vulnerable populations such as children and the elderly.

Water temperatures above this threshold may cause burns or injuries upon exposure, and keeping the maximum temperature at 180 degrees F helps to maintain safe usage conditions for drinking, bathing, and cooking. Additionally, while higher temperatures can improve the efficiency of certain plumbing fixtures or appliances, they also increase the potential for negative health effects if water is incorrectly dispensed or if there is a malfunction.

Keeping the temperature at or below 180 degrees allows for sufficient heating for sanitation and cleaning purposes while still being within safe limits for human interaction.