What color indicates a nonfunctioning hydrant?

What color indicates a nonfunctioning hydrant?

• A. Black
• B. Blue
• C. Red
• D. Yellow

Answer: (A)

Color cues on fire hydrants are used to show whether a hydrant can be relied on for water during an emergency. A hydrant that is black is used to signal that it is out of service or nonfunctional. That visual indicator tells firefighters not to rely on it for water and to seek another hydrant or alternative water source instead. This quick cue helps prevent wasted time and ensures crews connect to a hydrant that will actually deliver water. Keep in mind that color codes can vary by location, so it’s always good to know the local system, but in many departments, black specifically marks a hydrant that isn’t usable until repairs are completed.