Fix Leaky Bathroom Sink Faucet Single Handle

Turn off the water locate the hot and cold water valves beneath the bathroom sink and turn the handle clockwise on both valves to turn off the water to your single handle faucet.

Fix leaky bathroom sink faucet single handle.

Turn off the main water supply. Press the off switch on your water main box to turn off the water. The part number of the replacement valves will vary depending on the faucet model number. To test to make sure the leak is fixed turn on the water and let it run for a minute.

Alternatively look under your sink for a small valve. This will stop water from gushing out of your faucet when you unscrew it later. Decide which side of your faucet is dripping closing the water supply valves one at the same time. Determine which side of your faucet is leaking by shutting off the water supply valves one at a time.

If the leak stops then you need to replace the cold cartridge. How to fix a leaky bathroom sink faucet double handle locate the leak. The issues should be resolved by replacing the valve cartridge. To do that go under the sink and turn off the cold water at the wall by turning the knob clockwise.

Identify your faucet model number. Remove disassemble the old faucet. If the leak doesn t stop after the first valve is turned off it s the other line that s leaking. Once you determine which side is leaking turn off both supply valves.

If your valves are stuck shut off the water main. Then turn on the faucet to release the pressure and remove any water that may remain inside the water lines and faucet. Continuous leak when faucet is on or off. To identify your faucet model number please view identifying your faucet model.

Turn it off and check if the faucet is still leaking.