What Causes Loss Of Water Pressure In Bathroom Sink?

Good water pressure is critical to having a properly functioning sink, shower or bath.

It can mean the difference in speed for how long you’re waiting for water to come out – and we all know how frustrating it is when you’re expecting a stream, but you get a trickle!

What Causes Loss Of Water Pressure In Bathroom Sink

Without a good water pressure from your bathroom sink, brushing your teeth or washing your hands can become a chore, so you’ll need to fix the problem as soon as possible.

This guide will explain what the causes are of low water pressure from your bathroom sink and what you can do about it.

What Does Water Pressure Mean?

It’s best we start with the basics and explain what we mean by water pressure.

Water pressure refers to the amount of force that pushes water through pipes.

This is measured in pounds per square inch (psi). The higher the psi, the more powerful the flow of water.

The average household has somewhere between 10-50 psi of water pressure.

The higher your water pressure, the more quickly it will flow out of its designated area such as a shower head or sink tap.

Causes For Poor Water Pressure

We also want to make sure that you understand why this affects our sinks, showers and baths.

So let’s take a look at some of the most common reasons for poor water pressure:

The Plumbing System

If there is a leak in your plumbing system, then you could be experiencing lower than normal water pressure.

Leaks can occur anywhere along the pipeline including the main supply valve, faucet, fixture, etc.

If you find any signs of leaks, call a plumber immediately.

Poor Drainage

Another cause of poor water pressure is if your drains aren’t working correctly.

You should have clean and clear drains which run smoothly without clogs.

A clogged drain can result in slow draining of water, causing low water pressure.

Clogged drains can be caused by hair, soap scum, grease, food particles, toilet paper, etc.

To prevent them, keep your drains free flowing by regularly cleaning them using a plunger or other tool.

Dirty Fixtures

If your fixtures are dirty, they may not be able to pull enough water through them to maintain proper water pressure.

Dirty fixtures include toilets, urinals, tubs, showers, sinks, etc.

Cleaning them regularly helps ensure that you don’t experience any problems with water pressure.

Badly Installed Fixtures

If your sink fixture isn’t installed correctly, it won’t be able to pull enough pressure through to provide adequate water pressure.

You should always follow the manufacturer’s instructions when installing your sink.

The directions should tell you how much pressure each part needs to function properly.

Flow Restrictor In Place

Flow Restrictor In Place

A flow restrictor is a device designed to limit the flow of water through a particular fixture and is very common with bathroom sinks.

They are often used to reduce the risk of damage to the sink itself due to excessive water pressure.

They’re usually placed on the incoming side of the sink where the water enters the sink.

These devices work by restricting the flow of water into the sink. When the water is restricted, less pressure is required to push it through the pipes.

Restrictors come in different sizes depending on the size of the sink being supplied.

As an example, a 1″ restriction would be suitable for a standard kitchen sink while a 3/4” restriction would be suitable to fit a large bathtub.

Clogged Water Aerator

Water aerators help to increase the amount of air in the water so that it doesn’t become stagnant. This allows the water to flow more freely.

This means that the pressure required to force the water through the pipes is reduced.

When you turn off the tap, the water will continue to flow until all the air has been removed from the water.

When the water is no longer moving, the pressure drops dramatically. To avoid this problem, check that your water aerator is functioning properly.

It should be turned on automatically when the water comes out of the tap.

How To Solve Low Water Pressure From Bathroom Sink

There are a number of things you can try to fix the low water pressure from your bathroom sink. They include:

Check The Mains

First thing you need to do is check the mains supply to see if there is anything wrong with it.

If everything looks fine, then you’ll need to check the plumbing at the property.

Clean Or Replace Your Fixtures

The next step is to make sure that your fixtures are clean. Keep an eye out for any debris such as hair, soap scum or grease build up.

It could also be useful to use a plunger to remove any blockages in the system.

If everything appears clean and unclogged, you may need to replace the fixtures.

Clean Or Replace Water Aerator

Similarly, you should first remove and clean up your water aerator and check for any obvious blockages.

If none are present, and you feel as though you’ve done everything correctly, it may now be time to replace the aerator.

Contact A Plumber

This is the best course of action anyway, but if you have tried doing all of the above, or you know you have faulty fixtures, bad flow of water or a water leak – you’ll need to contact a plumber as soon as possible to get your water pressure functioning back to normal.

There are many things you can do yourself but to avoid any complications or disasters and simply for peace of mind, it’s far better to call in a professional to solve your problem.

The Bottom Line

Poor water pressure from your bathroom sink can be really irritating and cause you a whole host of problems.

If you’ve checked for obvious issues, and you think you’ve done everything right, and you’re still having concerns – always call for a plumber.

We hope this guide has been of use to you. Good luck with your bathroom sink!