CSLB Class B General Contractor's License Practice Exam

Which of the following is a common method to fix low water pressure in a newly constructed home?

1. Installing more fixtures

2. Adjusting the pump

3. Increasing the pipe diameter

4. Inspecting the supply lines for blockages

The correct answer is: Inspecting the supply lines for blockages

Low water pressure in a newly constructed home can often be attributed to various factors, and inspecting the supply lines for blockages is a common method to address this issue. When there are obstructions, such as debris, sediment buildup, or improper connections within the plumbing system, water flow can be restricted, resulting in diminished pressure at the faucets and fixtures. By thoroughly inspecting and clearing any blockages in the supply lines, the water can flow more freely, potentially restoring or improving water pressure throughout the home. This approach is practical because it directly targets the source of the pressure problem, allowing for a straightforward resolution without the need for extensive modifications. The other methods, while they might seem logical, may not effectively address the specific cause of low water pressure in many situations. For instance, installing more fixtures could further dilute the existing water supply rather than improve pressure. Adjusting the pump may help only if the pump is incorrectly set or sized, while increasing the pipe diameter should be considered only if there is a substantial issue with flow restrictions, and it can also involve significant renovation efforts. Therefore, inspecting for blockages is a targeted first step in troubleshooting low water pressure in a new home.