What is the minimum pressure required for hydrants?

The minimum pressure required for hydrants is typically set to ensure that a sufficient flow of water is available for firefighting operations. A pressure of 20 PSI is considered the baseline that allows firefighters to draw water effectively from the hydrant while still providing the necessary volume and pressure to combat a fire. At this pressure level, hydrants can deliver water consistently for extinguishing fires or supplying hoses.

If the pressure were below this minimum, it could lead to inadequate water supply when needed most, which might severely impact firefighting efforts. Higher pressures might be beneficial in certain situations, but 20 PSI represents a standard threshold for operational effectiveness and safety in most cases. Understanding this minimum requirement is essential for firefighters to ensure they can count on hydrants in emergency situations.