At what maximum temperature shall bathtub shower spray units deliver water?

The correct answer regarding the maximum temperature for bathtub shower spray units to deliver water is 120 °F. This temperature is established to ensure safety and prevent the risk of scalding. Water temperatures exceeding this threshold can cause serious burns, especially in children and the elderly, who may have more sensitive skin or slower reactions to hot water.

Building codes and plumbing standards often stipulate this maximum limit to protect public health and safety in both residential and commercial installations. Setting the temperature to a maximum of 120 °F effectively balances user comfort with the need for safety, as it allows for a warm and enjoyable bathing experience while minimizing the danger of thermal injuries.