How To Fix A Leaky Bathroom Sink Faucet With One Handle

How to Fix a Leaky Bathroom Sink Faucet With One Handle

A leaky bathroom sink faucet is a common plumbing issue that can waste water and increase your utility bills. Leaky faucets occur for various reasons, such as worn out or damaged parts, corrosion, mineral buildup, or improper installation. Fixing a leaky one-handle faucet is not as difficult as it seems and can be done with a few simple tools and a bit of patience.

Identifying the Type of Leak

Before you start repairing the leak, determine where it is coming from. There are three main types of leaks in a one-handle faucet:

Handle leak: Water drips from the base of the handle, indicating a worn out or damaged O-ring or cartridge.
Spout leak: Water leaks from the spout, usually caused by a worn out or damaged washer or aerator.
Base leak: Water leaks from the base of the faucet, typically caused by a loose connection or damaged O-ring.

Tools and Materials Needed

To fix a leaky bathroom sink faucet with one handle, you will need the following tools and materials:

Adjustable wrench
Phillips head screwdriver
Flathead screwdriver
O-rings (may vary depending on the faucet model)
Faucet cartridge (if necessary)
Washer (if necessary)
Aerator (if necessary)
Plumber's tape

Step-by-Step Repair Instructions

Once you have identified the type of leak and gathered the necessary tools and materials, follow these steps to fix the leak:

Handle Leak

Turn off the water supply to the sink.
Remove the handle screw located under the handle.
Lift the handle off the stem.
Remove the cartridge by unscrewing it counterclockwise.
Replace the cartridge with a new one.
Apply plumber's tape to the threads of the cartridge and screw it back into place.
Reattach the handle and secure it with the screw.
Turn on the water supply and check for leaks.

Spout Leak

Turn off the water supply to the sink.
Remove the aerator by unscrewing it.
Replace the washer located inside the aerator.
Reattach the aerator.
Turn on the water supply and check for leaks.

Base Leak

Turn off the water supply to the sink.
Disconnect the water supply lines from the faucet.
Remove the nuts holding the faucet to the sink.
Lift the faucet off the sink.
Replace the O-rings located on the base of the faucet.
Apply plumber's tape to the threads of the water supply lines and connect them to the faucet.
Place the faucet back on the sink and secure it with the nuts.
Turn on the water supply and check for leaks.

If the leak persists after following these steps, it is recommended to consult a professional plumber for assistance.