What is the standard operating pressure for most residential water supply systems?

The standard operating pressure for most residential water supply systems is typically set between 40 to 60 psi (pounds per square inch). This pressure range is considered ideal because it provides sufficient flow and pressure to enable the proper functioning of household fixtures, appliances, and water delivery systems while preventing issues such as leaks or damage that can occur with excessively high pressure.

Having a pressure that falls within this range helps ensure that water reaches faucets, showers, and other outlets effectively without overwhelming the plumbing infrastructure. Additionally, many municipalities set their water supply pressures within this range to ensure consistency and reliability across residential areas.

A pressure that is too low could result in inadequate flow, leading to poor performance of fixtures, while a pressure that is too high could stress pipes and fittings, potentially resulting in failure or leaks. Therefore, maintaining water supply pressure in the 40-60 psi range balances the needs for adequate delivery while safeguarding the plumbing system's integrity.