When municipal water supply is inadequate, what is the typical role of a fire pump?

• A. To regulate system pressure
• B. To monitor water quality
• C. To boost water pressure and supply to meet hydraulic demands
• D. To filter debris from water

Answer: (C)

When municipal water supply is inadequate, the fire pump serves as a booster to ensure enough water flow and pressure for the system. Its main job is to raise both pressure and the available water volume so the hydrants and sprinklers can meet the required hydraulic demands during a fire. It automatically engages when system pressure falls below the set point, and it can be powered by electric motors or diesel engines. This function is distinct from monitoring water quality or filtering debris, and from regulating pressure—those tasks are handled by other components or controls.