How To Fix A Leaking Sink Faucet In The Bathroom

A leaky bathroom sink faucet can be a source of frustration and wasted water. It can also lead to water damage and costly repairs if left unchecked. Thankfully, fixing a leaking faucet is often a simple DIY project that can save you money and time. This article will provide a step-by-step guide on how to fix a common type of leaking sink faucet: the compression faucet.

Identify the Source of the Leak

The first step is to determine the source of the leak. Observe the faucet carefully when it is turned on and off. There are two main types of leaks in compression faucets:

Drip Leak: This occurs when the faucet drips continuously, even when the handle is turned off completely. The most common cause is a worn-out washer.
Running Leak: This occurs when the faucet continues to run even after the handle is turned off. This is usually caused by a worn-out stem or a problem with the faucet seat.

Once you have identified the source of the leak, you can proceed with the necessary repairs.

Tools and Materials

Before you begin, gather the following tools and materials:

Adjustable wrench
Channel-lock pliers
Phillips screwdriver
Flathead screwdriver
Basin wrench
Replacement washer
Replacement stem (if needed)
Plumber's tape
Bucket
Towel

You can find these items at any hardware store.

Repairing a Drip Leak

If the faucet is dripping, the likely culprit is a worn-out washer. To replace it, follow these steps:

Turn off the water supply: Locate the shut-off valve for the sink and turn it off completely.
Remove the handle: Using a Phillips screwdriver, unscrew the handle screw and remove the handle.
Remove the packing nut: The packing nut is the large nut located below the handle. Use an adjustable wrench to loosen and remove the packing nut.
Remove the stem: The stem is the long, threaded rod that connects to the handle. Use channel-lock pliers to remove the stem. The old washer will be attached to the stem.
Replace the washer: Inspect the washer for signs of wear or damage. If it is damaged, replace it with a new one of the same size.
Reassemble the faucet: Reinstall the stem, packing nut, handle, and handle screw.
Turn on the water supply: Slowly turn the water supply back on and check for leaks.

Repairing a Running Leak

A running leak often indicates a problem with the faucet stem or seat. Replacing the stem is a more involved process than replacing a washer. If you are not comfortable with this repair, it is best to call a plumber. If you decide to attempt it yourself, follow these steps:

Turn off the water supply: Locate the shut-off valve for the sink and turn it off completely.
Remove the handle and packing nut: Follow steps 2 and 3 from the drip leak repair instructions.
Remove the stem: Use channel-lock pliers to remove the stem.
Inspect the stem and seat: Examine the stem for signs of wear or damage. Check the faucet seat for scratches or debris. If either is damaged, replace the stem and/or clean the seat.
Replace the stem (if necessary): If the stem needs replacement, carefully remove it and replace it with a new one of the same size and type.
Reassemble the faucet: Reinstall the stem, packing nut, handle, and handle screw.
Turn on the water supply: Slowly turn the water supply back on and check for leaks.

If the leak persists, there may be a problem with the faucet seat. This requires specialized tools and techniques. It is best to seek a professional plumber's assistance in this case.

While compression faucets are a common type, other types of faucets exist. For cartridge or ball faucets, specific repair procedures and replacement parts are required. Consult an online resource or plumbing guide related to your faucet type for detailed instructions.

Remember, it's crucial to exercise caution when working with plumbing. If you are not comfortable performing these repairs, it's best to call a professional plumber to avoid further damage or potential injuries.