Home Inspection State Practice Exam

At what water pressure level within a single family dwelling is it considered excessive and requires correction?

1. 50 psi

2. 60 psi

3. 70 psi

4. 80 psi

The correct answer is: 80 psi

Water pressure within a single-family dwelling is typically considered excessive when it reaches levels above 80 psi (pounds per square inch). At this pressure, various plumbing issues can arise, including the potential for leaks in pipes, damage to fixtures, and increased wear and tear on appliances. Many plumbing codes recommend that homeowners maintain water pressure between 40 and 60 psi for optimal performance and safety. Once the pressure surpasses 80 psi, it raises concerns not only for the integrity of plumbing systems but also for the overall effectiveness of water distribution within the home. Maintaining water pressure below this threshold helps ensure that water flow is consistent and that plumbing systems operate effectively without the risk of undue stress or damage. Corrective measures are usually advised when pressure readings hit this excessive level to safeguard the plumbing infrastructure and ensure efficient performance.