Which hydrants have a GPM range of 0-500?

• A. Blue hydrants 1500+
• B. Green hydrants 1000-1500
• C. Red hydrants 0-500
• D. Orange hydrants 500-999

Answer: (C)

Hydrant flow ratings are color-coded to show the amount of water a hydrant can deliver. Red indicates a GPM range of 0–500, making it the hydrant with the lowest available flow in this scheme. This helps crews quickly plan hose selection, pump operations, and water supply strategy because a 0–500 GPM hydrant may require additional lines or separate water sources. In contrast, blue hydrants deliver 1500+ GPM, green hydrants 1000–1500, and orange hydrants 500–999, none of which fall into the 0–500 category.