In which unit is water pressure typically measured?

Water pressure is typically measured in PSI, which stands for pounds per square inch. This unit quantifies the force exerted by water within a given area and is crucial in various applications such as plumbing, hydraulics, and water distribution systems. Understanding water pressure in PSI allows professionals to assess the functionality and safety of water systems, ensuring that they can deliver water effectively without causing damage to pipes or fixtures.

Other options represent different measurements: gallons per minute pertains to flow rate rather than pressure, and liters is a volume measurement. Feet of head relates to the height of a water column that can produce a certain pressure but is not as commonly used as a direct pressure measurement in practical applications like PSI. Thus, PSI is the standard unit for measuring water pressure directly.