WOWOW FaucetsQuick Answer
A leaking bathroom faucet is usually caused by a worn cartridge, O-ring, or washer. Turn off the water, disassemble the handle, replace the worn part, and reassemble to stop the drip.
Find the Leak Source
Check whether water drips from the spout or leaks around the handle or base. A spout drip points to the cartridge or washer; a base leak points to an O-ring or loose connection.
Step 1: Shut Off the Water
Close the shut-off valves under the sink and open the faucet to drain remaining water. Cover the drain so small parts do not fall in.
Step 2: Remove the Handle
Pry off the handle cap, remove the handle screw, and pull the handle off. On two-handle faucets, repeat for the side that leaks.
Step 3: Replace the Cartridge or Washer
Remove the retaining nut and pull out the cartridge or stem. Take the old part to a hardware store to match it, install the new part, and reassemble in reverse.
Step 4: Test
Turn the water back on slowly and check for drips. If the leak continues, the valve seat may be worn and need professional attention.
Frequently Asked Questions
Why does my bathroom faucet keep dripping?
The most common causes are a worn cartridge, washer, or O-ring. Hard water can also wear internal seals faster.
Can I fix a leaky bathroom faucet without replacing it?
Yes. Most drips are fixed by replacing the internal cartridge, washer, or O-ring rather than the whole faucet.
How much does it cost to fix a leaking bathroom faucet?
A DIY repair typically costs $5 to $30 for the replacement part. A plumber visit usually costs $100 to $250 depending on the area.
