What is the minimum water pressure a water pipe should be able to withstand?

The minimum water pressure a water pipe should be able to withstand is determined by various factors, including safety standards and the type of pipe material used. A pressure of 160 PSI is commonly recognized as a standard safety threshold for various plumbing systems, particularly in residential and commercial applications. This level of pressure ensures that the pipes can handle typical residential water pressures, which can vary during peak usage times, without risking failure or leaks.

In general, pipes are often tested to withstand pressures higher than the standards to provide a margin of safety. While 100 PSI and 120 PSI may be sufficient for certain low-pressure scenarios, they do not provide the necessary durability and reliability for everyday use across a wide range of conditions. Similarly, while 200 PSI may be more robust, it is less commonly needed and could result in unnecessary costs or complications in installation and maintenance. Thus, 160 PSI strikes a balance between safety and practicality for piping systems.