What system utilizes elevation to pressurize the water supply?

The correct choice is indeed one that refers to a system that relies on gravity to ensure water supply pressure. A gravity system uses the natural force of gravity to create the necessary pressure for water distribution. In this system, water is stored at a higher elevation, allowing it to flow downward to the distribution points. As the water moves downward, gravity exerts a force that pressurizes the water, enabling it to reach higher floors in buildings or travel distances within a distribution network without the need for mechanical pumps.

This method is commonly employed in many urban water supply systems as it is efficient and requires minimal energy inputs compared to mechanical systems. The advantages of using a gravity system include lower operational costs and reduced maintenance since it relies on a natural force rather than mechanical equipment.

Understanding how gravity systems work is essential for those involved in designing and maintaining water distribution systems, as it highlights the importance of elevation in managing water pressure effectively.