Water Pressure

Newer homes have a pressure regulator, is the pressure regulator on an incoming water line adjustable? Yes, the regulator is adjustable and you should try adjusting it before resorting to more expensive remedies, such as installing cushioning devices called water hammer arresters. In addition to causing the banging you describe (a condition called water hammer), high water pressure can erode washers and result in leaks. It also creates premature wear on appliances, including your dishwasher and clothes washer.

The typical inlet water pressure to a home is about 40 to 45 psi. Normally, it should not exceed 60 psi. The pressure regulator is usually preset to 50 psi. However, it can be adjusted anywhere from 25 to 75 psi with a simple turn of a screw. As you can see in the photo below, this home, (where I performed a Home Inspection in Aurora Colorado) has approximately 60 PSI (pounds per square inch) which most would have the opinion is ideal.

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