What is the maximum height the water surface can be above the pump intake centerline when using a static water source?

The maximum height the water surface can be above the pump intake centerline when using a static water source is 10 feet. This is important to remember because it relates to the principle of creating a sufficient vacuum to draw water into the pump. If the water surface is positioned more than 10 feet above the pump intake, the ability of the pump to draw water efficiently diminishes. Most fire pumps are designed to create a vacuum sufficient to lift water up to this height, beyond which vacuum losses and the effects of atmospheric pressure prevent efficient operation. Maintaining this height ensures reliable water supply and optimal pump performance during fire response operations.