Which color indicates hydrants with high flow, as per NFPA recommendations for hydrants flowing 1,500 gpm or greater?

Which color indicates hydrants with high flow, as per NFPA recommendations for hydrants flowing 1,500 gpm or greater?

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

Answer: (B)

NFPA 291 uses color coding on hydrants to show approximate flow rates. For hydrants capable of 1,500 gpm or more, the color used is light blue. This makes it quick to spot high-flow sources during an incident. The other colors represent lower flow bands: red for under 500 gpm, orange for 500–999 gpm, and green for 1,000–1,499 gpm. So light blue specifically signals the high-flow category.

NFPA 291 uses color coding on hydrants to show approximate flow rates. For hydrants capable of 1,500 gpm or more, the color used is light blue. This makes it quick to spot high-flow sources during an incident. The other colors represent lower flow bands: red for under 500 gpm, orange for 500–999 gpm, and green for 1,000–1,499 gpm. So light blue specifically signals the high-flow category.