How high is the column of water that creates 1 psi of pressure?

The correct answer is based on the hydrostatic pressure principle, which states that pressure increases with the depth of a fluid. Specifically, 1 psi (pound per square inch) of pressure is generated by a column of water that is approximately 2.31 feet high. This relationship is derived from the density of water and the gravitational force acting on it.

In practical terms, when measuring water pressure in a swimming pool or similar body of water, for every 2.31 feet of water, the pressure at the bottom increases by 1 psi. This understanding is crucial for pool operators when analyzing pressure readings from various equipment, ensuring proper functioning, and maintaining safe swimming environments. Therefore, knowing this column height helps in accurately assessing pressure and managing water systems effectively.