What is the minimum required water pressure for testing completed sections of a water supply system?

The minimum required water pressure for testing completed sections of a water supply system is defined as the working pressure. Working pressure refers to the operational pressure that the system is designed to handle while in use. This pressure is essential during testing because it ensures that all components, including pipes, fittings, and fixtures, can withstand the pressures they will experience in normal functioning without any leaks or failures.

Using the working pressure for testing provides a realistic and thorough assessment of the system's integrity. It ensures that any potential weaknesses or failures can be identified before the system is put into operation, enhancing safety and reliability. This is crucial for maintaining standards and compliance in plumbing installations.

Other options, such as static pressure, initial pressure, and standard pressure, do not specifically address the requirements for pressurizing a system for testing. Static pressure refers to the pressure exerted by a fluid at rest, which may not represent the conditions encountered in an operating system. Initial pressure and standard pressure are also not defined terms in the context of required testing standards, further underscoring the importance of using working pressure in this scenario.