Rhode Island Journeyman Plumber Practice Exam

When is tempered water typically used?

1. For cold water systems

2. For hot water systems

3. For emergency showers

4. For irrigation purposes

The correct answer is: For emergency showers

Tempered water is specifically used for emergency showers to ensure safety during situations that require immediate decontamination or flushing of the eyes or skin. This water is mixed to a safe temperature, usually between 60°F to 100°F, to prevent scalding or hypothermia. In emergency situations, where individuals might be in distress, having water at a controlled temperature is crucial. It allows for a balance—enough warmth to be comfortable yet cool enough to prevent burns, especially when prolonged exposure might be necessary. In contrast, the other contexts—cold water systems, hot water systems, and irrigation—do not require the same temperature controls that emergency situations dictate. Cold water traditionally requires no tempering, hot water is generally heated for specific applications without mixing for safety, and irrigation typically involves natural water temperatures, which may vary widely. Thus, the unique application of tempered water in emergency showers sets it apart from other uses.