What is the maximum water pressure allowed in a plumbing system per UPC regulations?

In plumbing systems, particularly under the Uniform Plumbing Code (UPC), the maximum water pressure limit is set at 80 psi. This regulation is established to ensure safety and integrity within the plumbing system. If the pressure exceeds this limit, it can lead to several issues, including leaks, burst pipes, and damage to fixtures and appliances.

Maintaining water pressure within this threshold is critical for the proper functioning of plumbing systems. Pressures above 80 psi may also complicate the effective operation of pressure-reducing valves, resulting in poor water delivery and increased wear on plumbing components. Therefore, the specification of 80 psi as the maximum limit is designed to protect the longevity and reliability of plumbing installations while ensuring efficiency in water distribution.