In this context, what is a typical "minimum residual pressure" required to ensure effective fire service operations?

The typical minimum residual pressure required to ensure effective fire service operations is 50 PSI. This pressure level is considered adequate for maintaining sufficient flow rates and supply during firefighting activities. Fire suppression operations often require a reliable water supply to combat fires effectively, and a minimum residual pressure of 50 PSI can provide the necessary force required to adequately deliver water through hoses and nozzles.

This level of pressure ensures that firefighters have the necessary water pressure to reach higher floors in buildings and to utilize various types of equipment efficiently. It is crucial for water systems to maintain this pressure to ensure that firefighters can connect to hydrants or other water sources and perform their duties safely and effectively. Higher pressures, while beneficial in certain circumstances, may not be practically required for all typical firefighting scenarios.