What is the maximum water pressure recommended in residential plumbing systems?

In residential plumbing systems, the maximum recommended water pressure is 80 psi. This is important for several reasons. Water pressure that exceeds this threshold can lead to issues such as leaking pipes, damaged fixtures, and increased wear on appliances that rely on water supply. At 80 psi, the system can effectively deliver water to all areas of the home without compromising the integrity of the plumbing fixtures or connections.

Maintaining water pressure around this level also ensures that the household's water consumption needs are met, providing sufficient flow for showers, faucets, and appliances without overstressing the plumbing infrastructure. On the other hand, pressures significantly above this limit—such as 100 psi or 120 psi—might seem beneficial but can create an environment ripe for plumbing failures and inefficiencies. Therefore, the recommendation of 80 psi serves to balance adequate supply with system longevity and reliability.