Well Water Pressure

Water pressure varies widely.  On a well system, the normal pressure is 20 to 60 psi, with a delta pressure of approximately 20 psi.  The delta is determined by the pressure difference between when the pump comes on and when it is switched off again.  City water pressure is normally 40 to 60 psi.  In mountainous terrains, such as Pittsburgh, you may frequently find pressure-reducing valves on municipal water, as the pressures in these locales can get exceedingly high.