How to increase water pressure in bathroom sink

Even though the bathroom is one of your home’s smallest rooms, it must be cleaned. There is often water or soap residue surrounding the sink and bathtub, so wash everything thoroughly. Water pressure isn’t great, so cleansers don’t work as well as they should. When you’re trying to figure out how to increase the water pressure in a bathroom sink, you have many options. Some of these possibilities are cheap and easy, while others may be more pricey (and difficult).

Whether you’ve been renting or owning a home, it’s not uncommon to have low water pressure in the bathroom sink. Underpowered or undersized pipe diameters typically cause this issue. The good news is that we can rapidly repair this issue without consulting a plumber. Learn how to raise the water pressure in your bathroom sink to properly wash your hands or clean the tub and sink.

Increasing water pressure under the kitchen or bathroom sink is a common plumbing task. Depending on your home’s size and configuration, these sections will have lower water pressure than others.

We all want to know how to get high pressure from the water tap. Hopefully, if you follow a few simple steps, you will realize it is so easy to raise the pressure in the bath.

The average bathroom sink has a water pressure of just around 20 pounds per square inch (PSI). With low water pressure, it may take you longer to wash up and use the toilet as well.

Water Pressure Problems in the Bathroom?

The increasing demand for water forced the worldwide pump industry to come up with more efficient ways to produce water. The pressure and flow of water moving through a pipe increase because of the rising and falling pressure of the water in the tank. The volume of water pumped is directly related to the pressure on the plunger and the syphon cup. When the plunger falls, it triggers the siphon action of the syphon cup, drawing fresh water into the cylinder. When the plunger returns to its original position, there is enough pressure to push the water out under increased force until there is no more air remaining in the system.

No matter how much you would like to, you can’t live without water. You need it to sustain life and even to stay healthy. We all go to the bathroom, but how many of us know that the quality of water we used to wash with is vital to our overall health and well-being? Every day, you are exposed to water in either and whether you realize it, there are many dangers lurking under the surface.

What causes low water pressure in bathroom sinks?

You have lost water pressure throughout your house, and you don’t know what to do. You can still get water out of the bathroom faucet, but it’s at a trickle. It’s hard to wash your clothes and dishes, and you can’t take a shower. If you narrow down where the problem is located and then troubleshoot it, you may be able to fix it yourself.

If you are experiencing a loss of water pressure in your bathroom sinks, there are a variety of things that may be the cause.

Clogged aerator

If you notice that the water comes out unevenly (or not at all), the most common problem may be in your aerator—the part at the end of the faucet where the water comes out. The aerator can clog up with minerals from hard water over time, and when that happens, you may not get as much pressure coming out. It’s an easy fix—just unscrew it from the end of your faucet, give it a good cleaning, and reattach it. You should notice an immediate difference in the flow of water!

How do you fix a water aerator?

Check Faucet aerator

Remove the aerator from the end of the bathroom faucet by unscrewing it to remedy the low water pressure issue. You can usually do this by hand, but if the buildup is old, a wrench may be required. It should never use pliers since they can bend the plumbing fittings. See the illustration for a better understanding of the components of a faucet aerator.

Examine the openings in the aerator to check if there is a problem. If mineral deposits have clogged the openings in the aerator, scour it with a cleaning toothbrush while running it underwater. Alternatively, you can use a safety pin to empty the holes.

Change Faucet aerator

You can soak the wire mesh in a white vinegar and water solution overnight if there is a lot of hard water buildup. Allowing it to soak in vinegar overnight can help break down the mineral accumulation and eliminate any hard water buildup. After that, rinse it and return it to its original position in the morning.

Clogged pipe

If removing the aerator didn’t do the trick, you may have a clog farther down the system. Turn off your main water valve and open your faucet to relieve pressure. There should be a shutoff valve below your sink; turn that off as well. Disconnect the supply line from either side of the sink’s shut-off valve, and blow into one end of the supply line until air comes out of the other end. Then reconnect everything and turn on the valves again—your water pressure should return to normal!

Partially closed valve

Partially closed shut-off valves can cause low water pressure in your bathroom sink. If the water supply line is too low, it can cause the flow of water to slow down or stop. A buildup of sediment in the pipes, which causes a blockage, can cause this. The best way to fix this problem is to clean out the pipes and replace them with new ones. You could also try adding some vinegar to your water supply line to help remove any buildup that may have accumulated.

Aging pipes or fixtures

Old pipes and fixtures tend to clog up quickly when they become filled with bacteria, hairballs, soap scum, rust, etc. These things must be removed before the pipe can work properly again. Cleaning the pipes or fixtures is often necessary to restore normal water flow. It’s important to note that even though your pipes may look clean on the outside. Containers made of metal do not last forever. Eventually, the inside of the container may become contaminated by rust or other elements. This may cause a problem with the flow of water passing through the containers. To fix this problem, you must replace any damaged pieces before installing new ones. Be sure to clean up all of your pipework before replacing any new parts!

Leaking pipes or faucets

When there is less water in the system because of an escape of water, then there might be a lower pressure that affects how much water flows through a pipe or faucet. This can happen when we use more than one source at the same time.

Low water pressure is caused by a leak in the piping or fixtures. An improperly installed valve seat washer, which should be replaced, can cause this.

Water shutoff valve that is not fully open.

You’ll also want to check that the water shutoff valve is completely open. If it isn’t, your pipes won’t get enough flow to deliver the desired water pressure. If you can’t fully open this valve by turning it clockwise. There may be other issues with your plumbing that require professional assistance.

Running too many appliances simultaneously

If you have multiple appliances running at once—like a dishwasher and a washing machine—they may draw too much water from the pipes at once. As a result, there won’t be enough pressure for other taps in your home (like your bathroom sink). Try to avoid running multiple appliances at once, especially if they use hot water.

Check the aerator.

A bathroom sink can suddenly lose water pressure when a faucet aerator becomes clogged. An aerator is the part of the faucet that mixes air with water to create a smooth, even stream. When this component becomes clogged, sediment and debris buildup can restrict or block the flow of water through the spout.

The buildup of mineral deposits

The mineral buildup deposits inside the faucet or showerhead often cause sporadic low water pressure. These deposits comprise calcium and magnesium and are drawn into your home through your plumbing pipes from hard water sources such as wells, lakes, and rivers.


More than half of plumbing problems are related to low water pressure.

What tools do we need?

We’re here to walk you through how to increase the water pressure in your bathroom sink so you can get a good rinse early in the morning. Trust us—we’ve been there. It’s no fun to start the day with a shoddy sink flow.

You’ll need a few tools:

  • An adjustable wrench
  • A screwdriver
  • Teflon tape
  • Replacement parts (if necessary)
  • Plumber’s tape (if you don’t have any on hand, try using a bit of electric tape)

Find the exact issues.

Have you ever wondered how to increase the water pressure in your bathroom sink?

Well, we’re here to help!

Here are three easy fixes for low water pressure in your bathroom sink:

  1. The first thing to check is whether the problem is affecting only one sink or all of them. If it is only affecting one sink, then you know that the issue is with that sink, and not within the plumbing system itself.
  2. Check to see if both hot and cold water are affected equally (if applicable). If one of them has more pressure than the other, then it could show where the problem lies.
  3. Check for any blockages on the aerator screen, which can be cleaned or replaced if necessary. This should solve most problems with reduced water pressure at bathroom sinks.
  4. If you have access to the shutoff valve on your water lines, try turning off any other lines that may run at the same time as your sinks (such as washing machines or dishwashers) and see if this helps to improve your water pressure at your bathroom sinks.
  5. Check for clogs: A simple clog can cause low water pressure. Check the aerator screen (the small screen at the faucet) and the drain stopper. Both areas can become clogged with debris, which can reduce water flow.
  6. Check the faucet parts: The faucet valve seat could be corroded or worn out, causing the washer to not seal properly and reducing water flow.
  7. Turn off the water supply and remove the stem, then inspect the parts of the faucet. Then replace any worn-out parts.
  8. Check connections: The pipe connections in your sink can become loose over time, causing a leak that will reduce water pressure inside the pipe. The first step is to turn off the main shut-off valve under your sink. Once you’re sure there’s not a leak in your system, turn on the main shut-off valve to test whether this fix worked to increase your water pressure at the bathroom sink. To fix it, follow the below steps.
  • Turn off the water supply valve and open the faucet to release pressure and allow any excess water to drain out.
  • Look under the sink to see what sort of pipes you have: copper, PVC, or galvanized steel. The pipe type will determine the fittings you need.
  • If your pipes are copper, use a copper pipe cutter to remove the old connector and clean both ends of the pipe with sandpaper.
  • If your pipes are PVC or galvanized steel, use an adjustable wrench to loosen and remove the old connector, then clean both ends of the pipe with a wire brush.
  • Use a hacksaw to cut two inches off each end of the shower-head extension tube (if you’re using one). Clean both ends of the pipe with sandpaper if it’s copper, or with a wire brush if it’s PVC or galvanized steel.
  • Attach one end of the new connector to one end of the pipe with a compression nut and ferrule (ring) for copper pipes and glue for PVC/galvanized steel pipes. Do not over-tighten these nuts, as this may cause them to crack. Repeat this step on the opposite end of the connector, attaching it.

9. Check the main water supply line: Sometimes low pressure can be caused by a kinked or cracked supply pipe. A quick twist of the wrench is all it takes to tighten this connection and get your water flowing like normal again.

How can you fix your running water pressure problem?

If you’re having trouble with your water pressure, you’re not alone. A lot of homeowners complain about low water pressure in one or more faucets in their homes. Before you call a professional plumber, try these easy DIY methods that can help increase the water pressure in your bathroom sink.

Testing your faucet is the first step. You will want to test the water at every faucet in your home, including kitchen and bathroom sinks, as well as bathtub and shower faucets. If you find low water pressure affects all of your faucets, then the problem may come from your main water supply line. If only one or two of your faucets have low water pressure, then this is probably a unique problem altogether.

Follow these tips and tricks to increase the pressure of your running water:

  1. Test your faucet.
  2. Add an inline booster pump.
  3. Use wide-gauge water pipes.
  4. Gravity-fed systems
  5. Pressurized systems

Test Your Faucet

Start by testing your faucet. Try turning on the hot and cold water simultaneously to check if the pressure is low on both sides. If you only have low water pressure on one side, then there may be an issue with your faucet. For more information on fixing this problem, check out our articles on how to replace a faucet and how to replace a shower cartridge.

Add an inline booster pump.

If you have identified that the problem is with your faucet but don’t want to replace it, then an inline booster pump might help increase water pressure in a bathroom sink. This device is installed directly into your plumbing line and helps to boost pressure by increasing flow rate through shrinking pipes while also preventing leaks from occurring at high pressures.

Use wide-gauge water pipes

You can also increase water pressure by replacing your water pipes with wider gauge pipes. This will allow more water to flow through at once and give you higher pressure overall!

The wider these pipes are, the more water they can hold – so if you have narrow pipes (or even just one narrow pipe), then make sure they’re replaced with wider ones ASAP! This way there’s plenty of room for many liquids passing through them without getting clogged up by debris like hair and dirt particles from clothes washing machines.

Gravity-fed systems

If you’re trying to increase the water pressure in your bathroom, it’s important to note what type of water supply system you have. The most common is gravity-fed and pressurized.

Gravity-fed systems are the most common, and they use only gravity to push water through the pipes. This is a simple system that can be used for many applications, and it’s inexpensive compared to other options. However, it requires that the water source be positioned higher than the tap outlet, which may not always be possible or practical depending on where you live.

Pressurized systems

Pressurized systems use pumps to force water through pipes. They are more complex and costly, but they allow you to have taps in any location you want without worrying about gravity limitations. They also provide better performance overall because there is no need for an elevated water tank in order for them to work correctly; instead, all that is needed is an electrical outlet near each tap outlet with enough power supply capacity, which makes installation much easier than what would be required with a gravity-fed system (which would require running new pipes or drilling into existing walls).


With a few simple steps, you can increase the water pressure in your bathroom sink. Be sure to shut off the main water supply when adjusting your sinks shower head, and faucet, and always call a professional if you’re not comfortable performing these tasks yourself.

We hope this guide has helped you increase the water pressure in your bathroom sink. If any of the steps were unclear or if you have new questions, comment on or check out our other helpful how-tos.

Happy DIYing!