What is the term for water at a temperature greater than or equal to 110°F?

The term for water at a temperature greater than or equal to 110°F is "hot water." According to plumbing codes and standards, water at this temperature is typically used for various applications, such as domestic hot water systems, bathing, and washing, where higher temperatures are beneficial for sanitation and comfort.

In residential and commercial settings, hot water is expected to meet certain temperature guidelines to ensure the effectiveness of cleaning and to prevent the growth of bacteria, especially in systems designed for potable water use. The designation of "hot water" is generally recognized in plumbing regulations, influencing how water heating systems are designed and operated.

Other options, such as cold water and chilled water, refer to significantly lower temperatures used in different contexts, while warm water typically denotes temperatures that are below the threshold for hot water, often in the range of around 90°F to 110°F.