What Causes Low Water Pressure In A Bathroom Sink

What Causes Low Water Pressure In A Bathroom Sink?

Low water pressure in a bathroom sink is a common plumbing issue that can be frustrating to deal with. There are several potential causes for this problem, and identifying the source is essential for finding the right solution.

Clogged Aerator:

The aerator is a small screen attached to the end of the faucet spout. It helps to aerate the water, creating a more forceful stream. Over time, the aerator can become clogged with mineral deposits or debris, which can restrict water flow.

Faulty Washer:

The washer is a rubber seal that sits between the faucet stem and the faucet body. A worn or damaged washer can allow water to leak out around the stem, reducing water pressure.

Corroded Pipes:

Corrosion can occur in old or poorly maintained pipes, causing the inside diameter of the pipes to decrease. This can lead to reduced water flow and low water pressure.

Frozen Pipes:

In cold climates, pipes can freeze during extreme temperatures. This can block water flow and cause low water pressure. Frozen pipes should be thawed immediately to prevent further damage.

Partially Closed Shut-Off Valve:

The shut-off valve under the sink may not be fully open, restricting water flow to the faucet. Ensure that the shut-off valve is fully open to allow maximum water pressure.

How To Fix Low Water Pressure In A Bathroom Sink

Once you've identified the cause of the low water pressure, you can take steps to fix it:

1. Clean the Aerator: Remove the aerator from the faucet spout and soak it in a vinegar solution. Use a small brush to remove any mineral deposits or debris.

2. Replace the Washer: Turn off the water supply and remove the faucet handle. Replace the old washer with a new one. Ensure the new washer is the correct size and shape for your faucet.

3. Inspect and Repair Corroded Pipes: If you suspect that corrosion is the issue, contact a licensed plumber to inspect and repair the affected pipes.

4. Thaw Frozen Pipes: If frozen pipes are the cause, apply heat to the affected area using a heat gun, hair dryer, or warm water. Never use an open flame.

5. Fully Open the Shut-Off Valve: Locate the shut-off valve under the sink and turn it fully counterclockwise to ensure it is completely open.

If you are unable to fix the low water pressure issue yourself, it is recommended to contact a licensed plumber for professional assistance.