7 Surprising Causes of Low Water Pressure in Your House

Home Tips

When the water coming out of your faucet or shower is a weak trickle rather than a spray out, it can be a sign that you might need a Penrith plumber. That’s low water pressure you’re experiencing and it would be inconvenient for your household. Even if there’s still water coming out, you should consider fixing it immediately. If not addressed right away, low water pressure can even leave you without water for a time.

7 Surprising Causes of Low Water Pressure in Your House

To fix the issue of water pressure in your house, you must first know what’s the reason for it. Here are 7 surprising causes of low water pressure. Understanding these causes can help you think of solutions and restore the steady stream of water.

1. Closed valves

If your house is the only one without water in the block, the reason must just be around the corner. Check and find the valves controlling the water intake in your house. They may not be fully opened.

Two valves may cause this water pressure issue: the main house shutoff valve and water meter valve. If it’s the main house shutoff valve, you can simply turn it on. A handle that looks like a lever will need you to make it parallel to the pipe, while a handle that’s similar to the one used to turn a hose will require you to turn it in a counterclockwise direction to open fully. This valve may be located outside or inside, together with the main city supply pipes.

If it’s the water meter valve, you might need to contact your water company. Most of these valves are not accessible to residents. If it is in your case, check and turn it on.

2. Clogged pipes

Clogs not only happen beneath the drains. They can also build up in your water pipes, and even a small one can greatly affect the water supply in your house.

Clogs are blockages that disrupt the water flow through the pipes. When they are present in your lines, water pressure will decrease. Cleaning or replacing the pipes may fix the issue. 

Maybe you are interested in How to Install Plumbing in Existing Concrete Slab

3. Leaking pipes

Any leak in your pipes can make the pressure drop. It misdirects the water supply, and your house doesn’t get the full flow. Worse, your pipes may crack or rupture due to leakage.

If you think there’s a leak in your pipes, figure out where it is, make a quick fix if possible and call the plumber in your area. When pipes are exposed and accessible, it is easy to find a pool of water or wet spots. However, if they’re not, your plumber will need extensive work. The leak may not only be in one location but several pipes of the entire plumbing system.

4. Faulty fixtures

It’s easy to tell if the low water pressure is caused by the water supply or the pipes: all of your fixtures will be affected. If only one or two fixtures are having low water pressure, it’s probably these fixtures that are having the problem.

Parts inside the faucet can get damaged without you knowing. Its aerator, which reduces water pressure coming from the faucet, can have sediment buildup. This buildup is also possible with showerheads. Or the faulty washer could be diverting the water flow of your faucet.

In some cases, this can be easily fixed by cleaning the parts. Otherwise, you have to replace your fixtures. The new-age faucets are easy to install. Today, it is possible to purchase the faucets from a popular company like allorausa.com and install it.

Read more: How Long to Let PVC Glue Dry before Turning on Water

5. Corroded plumbing

Pipes corrode with time. Rust and other forms of corrosion may eat away a pipe or your entire plumbing system as it ages. The possibility of having corroded plumbing increases if your house is old. With this situation, a plumber must immediately assess the damage and replace the pipes as corrosion can also contaminate your water supply.

6. Excess water pressure

Although you need good pressure for showers and other hygiene-related activities, too much of it can be dangerous for your plumbing system. Excessive water pressure can burst pipes and then break your faucets. If only the inside parts of the faucet are damaged, your faucet may begin to leak because of the damage.

Given its capacity to harm all of your pipes, a plumber may be required to fix this issue and maintain good pressure in your system. You can also have the pressure check once in a while to make sure nothing will strain your pipes.

Read more: Myths About How Long Does Plumbers Putty Take To Dry?

7. Rapid temperature changes

When the temperature unexpectedly changes and becomes extreme, pipes will expand and contract, which may result in cracking. This is common when the temperatures are freezing. When the water inside the pipe freezes, the pipe expands and even ruptures. When the pipes thaw, they may also burst because of the additional pressure from the melting of water. The same may happen during very hot weather, but it’s less common.


Dealing with plumbing problems can be stressful that you might be tempted to delay addressing them. However, the issue of low water pressure at home should not be ignored unless you want your household to suffer longer. Having your pipes regularly checked will help detect these causes early and prevent having drips and dribbles while having a shower. Deal with these causes right away and enjoy regular water pressure in your house.

7 Surprising Causes of Low Water Pressure in Your House