If you notice a problem with the water pressure in your home, it could mean that you have to make a few adjustments to the water pressure regulator. Most homes do not have pressure regulator installed, but if you have one and it is not adjusted properly, you could have either too much, or too little pressure in your faucet or shower. With the right tools, you will be able to adjust the water pressure regulator by yourself instead of calling in the plumber.