High water pressure is what most people want. It is desirable. If too high, there may be damage that can occur; it may result in the water supply hoses to the laundry equipment or dish washer bursting, or cause pipes to leak.
40 to 80 psi
A pressure range of 40 psi to 80 psi is usually considered a good and safe range.
This condition may be easily fixed.
First check to see if there is a pressure regulator on the water line. If so, then turn the pressure setting down. Doing this will usually reduce the pressure. If this does not work, then the pressure regulator may need to be repaired or replaced.
If there is no regulator, then having a plumber install one will reduce the pressure to a desirable range.
Remember, it is easier to reduce water pressure, than to try to increase it.
Who to consult? Plumbers and qualified handymen.
Home owners can normally make adjustments to a pressure regulator themselves. Plumbers and qualified handymen can likewise make adjustments to pressure regulators, as well as do other work that may help reduce pressure.