At what temperature should water be maintained at point of use?

The correct answer is based on the requirement to maintain water at a safe and comfortable temperature for user purposes, including sanitation and hygiene. Water temperatures in the range of 100º-120ºF are optimal for achieving cleansing without posing a scalding risk.

This range is commonly recommended as it ensures that the water is warm enough to effectively dissolve detergents and sanitize items but not so hot that it can cause harm to individuals, especially vulnerable populations such as the elderly or those with sensitive skin. Additionally, maintaining water within this temperature range also maximizes user comfort, as it allows for various activities, from bathing to cleaning, without discomfort or risk of injury.

The other temperature ranges provided either fall below the minimum effective temperature for sanitation or exceed safe temperature thresholds that could lead to a risk of burns or scalding injuries.