Which hydrant color represents the highest available flow among the listed categories?

Which hydrant color represents the highest available flow among the listed categories?

• A. Red
• B. Green
• C. Light Blue
• D. Orange

Answer: (C)

Hydrant color coding communicates how much water a hydrant can deliver, so crews can quickly judge supply at a scene. In this color scheme, Light Blue hydrants indicate the highest available flow, more than red, orange, or green. This matters because higher-flow hydrants support larger attack lines, higher pump pressures, and may reduce the need for multiple hydrants to sustain a fight, speeding up operations and reducing risk. The exact flow ranges vary by department, but the pattern is that Light Blue represents the greatest capacity among the listed options, while the other colors indicate progressively lower capacities.