What is the typical water pressure in street water mains sufficient for moderate plumbing installations?

The typical water pressure in street water mains that is considered sufficient for moderate plumbing installations generally falls within the range of 45 to 60 pounds per square inch (psi). This pressure range ensures that there is adequate flow and pressure for most residential fixtures and appliances, allowing for effective operation without causing damage or inefficiencies.

Water pressure that is too low would result in inadequate flow rates to fixtures and may not meet the demands of high-use appliances like showers, dishwashers, and washing machines. Conversely, water pressure that is too high could lead to leaks, damaged fixtures, or excessive wear on plumbing systems. Therefore, the 45 to 60 psi range strikes a balance that supports reliable performance in various plumbing applications while maintaining system integrity.