How to Fix a Dripping Faucet

A steady drip means an internal seal is worn. On a cartridge faucet it's the cartridge; on a compression faucet it's the washer and seat.

Common causes

• Worn cartridge O-rings or seals
• Corroded valve seat on compression faucets
• Mineral buildup preventing a clean seal
• Damaged washer under the handle

Step-by-step

1. 01Shut off the angle stops under the sink and open the faucet to drain
2. 02Pop the handle cap, remove the screw, and lift the handle off
3. 03Pull the cartridge straight up — take a photo of orientation before removing
4. 04Match a new cartridge or washer at the hardware store and reassemble

When to call Northbridge

• Water still drips after a cartridge replacement
• Handle is seized and won't come off
• Faucet is old and parts aren't available
• Leak is coming from the faucet base, not the spout