If hydrant flow is lower than expected, what is an appropriate action?

• A. Continue with same plan; hydrant data is always perfect.
• B. Re-evaluate using the hydrant test data and employ relay pumping if needed.
• C. Replace the hydrant.
• D. Pause operations and wait for improvements.

Answer: (B)

When hydrant flow is lower than expected, the key step is to use the hydrant test data to reassess the water supply and adjust the plan accordingly. Hydrant tests tell you how much water is actually available and what pressure you can deliver, so if the data show insufficient flow to maintain the required attack-line pressure, you should implement relay pumping to augment the supply. This means using additional pumpers to relay water from another source into the system so the scene maintains adequate flow and pressure for effective operation. This approach relies on real test data rather than assuming the initial plan will hold, and it avoids delays or unworkable fixes. Continuing with the original plan ignores possible inaccuracies in the data, replacing the hydrant isn’t a practical quick fix during active operations, and pausing to wait for improvements is not workable when still fighting the fire.