Massachusetts Plumbers Journeyman Practice Exam 2026 – All-in-One Guide to Master Your Licensing Test!

The correct answer indicates that public water outlets should be designed to limit the outlet temperature to a maximum of 110°F. This temperature is considered a safe threshold to prevent scalding or burns, which can occur at higher temperatures.

The rationale for this standard involves ensuring the safety of users, especially vulnerable populations such as children and the elderly, who are at a higher risk for thermal injuries. Regulations and guidelines set by health and safety organizations often recommend this temperature as part of safe plumbing practices to promote public health. Setting the limit at 110°F helps strike a balance between providing water that is adequately warm for comfort while preventing the risk of burns.

The other options reflect temperatures that would either be too low, potentially leading to discomfort or inadequate washing and sanitation, or too high, significantly increasing the risk of thermal injury.