What type of pressure can indicate malfunctions within a water supply system?

Residual pressure is a critical measurement in assessing the functionality of a water supply system. It refers to the pressure remaining in the system when water is flowing, such as during firefighting operations. A significant drop in residual pressure can indicate potential issues like leaks, blockages, or insufficient supply volume. Understanding the residual pressure is essential for firefighters to ensure they have sufficient water available to fight fires effectively.

In a well-functioning water supply system, the residual pressure should remain within a certain range, allowing for adequate flow rates. Monitoring this pressure helps firefighters quickly identify any malfunctions that may impede their ability to access safe and sufficient water during an emergency.