Place a water pressure gauge on an exterior faucet and then open the faucet all the way to find your home's current water pressure. Normal water pressure is around 50 psi (pounds per square inch).
Locate the pressure regulator for your home. The pressure regulator is typically located where the main water line enters the house.
Remove the cap over the pressure regulator (if necessary) to access the adjustment screw.
Determine the proper size wrench that is needed by trying various sizes until you find one that fits. You can also use an adjustable wrench.
Place the wrench on the screw and then turn the screw counterclockwise to reduce the water pressure.
Connect a pressure gauge to an exterior faucet and then open the faucet all the way.
Check the water pressure by reading the gauge. The gauge should read somewhere between 40 and 50 psi.
Things You Will Need
- Adjustable wrench
- Pressure gauge
- Have a licensed plumber install a pressure regulator if one is needed or required because of a law or ordinance.