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Low Water Pressure in the Home: Common Causes and Solutions

Having a well-regulated water pressure in the home is necessary for efficiently completing household tasks and rinsing without using a considerable amount of water. If you are experiencing low water pressure, it may be caused by a plumbing problem. Thankfully, this issue can be addressed by identifying what causes it. Here are some reasons why low water pressure occurs and some practical solutions to them:

Old or Faulty Plumbing Fixtures

Check your pressure regulator and water supply lines. If they are both working properly, then a faulty tap or showerhead may be the cause of low water pressure in your home. In this case, replacing this faulty fixture with a new one is the best solution. You have the DIY option, but it’s best to seek plumbing services to let experts do the plumbing job for you.

High Water Demand

If there is a noticeable temporary decrease in your water flow, you likely have a high water demand in your home. This takes place when the water supply is split between two plumbing fixtures. For example, it occurs if you are using the washing machine and the shower simultaneously. To resolve this, use fixtures that require high volumes of water separately.

Blocked Water Pipes

Blocked water pipes could be the culprit for low water pressure. This fluctuation in water pressure happens when the total water flow decreases in proportion to how much water is blocked. Restoring the original pressure can be achieved by hiring residential plumbing professionals to have the pipes cleaned.

Corroded or Leaking Pipes

Over time, pipes can undergo corrosion, resulting in reduced water pressure. Since corroded pipes are usually old, calling a plumbing company for a pipe repair or replacement is wise. Another potential cause of low water pressure is leaking pipes. It is a severe plumbing problem, so it’s advisable to seek emergency plumbing services as soon as possible.

Broken Water Pressure Regulator

In Australia, the maximum water pressure for a household must be 45-55 pounds per square inch (psi). If the psi reading is less than 40, it means that the home loses water pressure. This can be resolved by installing an optimally working water pressure regulator. This valve adjusts the pressure and ensures the pressure remains within a safe range. 

A faulty regulator may cause the water pressure to become too low or too high. Calling a plumber is recommended to see if it needs repair or replacement.

Water Valves

Main shut-off water valves are used to turn the flow of the water on and off entirely. Failing to turn them back on can cause the overall water flow to the home to be limited. As a result, it reduces the pressure in the water supply pipes. Before using the fixtures, turn the valves on and make sure they are completely opened.


Having low water pressure in the home can be frustrating. Many potential causes can be blamed for this issue. If you are still unsure why you are experiencing this problem even after reading this guide, it’s time to reach out to plumbing professionals who can assist you.

Contact highly trained plumbers from Sunny Coast Plumbing and Gas to address any plumbing problems. We specialize in repair, maintenance, installation, and inspection. Request a free quote today!

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