In high-rise firefighting, what is critical regarding the water supply for hose lines?

In high-rise firefighting, the critical aspect regarding the water supply for hose lines is the continuous availability of water. High-rise buildings present unique challenges due to their height and the distance from the water supply source, which can make it difficult to maintain consistent water pressure and flow. Firefighters need a reliable and uninterrupted supply of water to effectively combat fires and to ensure rapid suppression efforts.

If the water supply is not continuously available, it could lead to the inability to apply sufficient water to extinguish the fire, potentially leading to a loss of control over the situation. This is especially vital in high-rise incidents where the fire can spread quickly, and firefighters may need to sustain their efforts over an extended period. The focus on a continuous supply ensures that firefighters can maintain effective water application throughout their operations, allowing them to respond dynamically to changing fire conditions within the building.