How to Fix a Leaking Tap
Fix a leaking tap by shutting off the water supply, removing the handle, and replacing the worn washer, O-ring or cartridge causing the drip. Most tap leaks come from a single small part, not the tap body itself.
Before starting, identify the tap type: a compression tap uses a rubber washer, while modern mixers usually use a cartridge or ceramic disc. This determines which part you need to replace.
Step-by-Step: How to Fix the Drip
- Shut off the water supply — Close the isolation valve under the sink or the main supply if there is no local valve, then open the tap to release remaining pressure.
- Remove the tap handle — Unscrew or pop off the decorative cap, then remove the screw underneath to lift the handle away from the tap body.
- Access the cartridge or washer — Unscrew the retaining nut or bonnet to expose the cartridge, ball or washer mechanism inside.
- Replace the worn part — Take the old washer, O-ring or cartridge to a hardware store to match it exactly, then fit the new part in the same position.
- Reassemble and test — Put the tap back together in reverse order, turn the water supply back on, and check for drips at the spout and base.
Tools You’ll Need
- Adjustable wrench or pliers
- Flathead or Phillips screwdriver
- Replacement washer, O-ring or cartridge matching your tap model
When to Call a Plumber
If the tap still drips after replacing the part, or the tap body itself is corroded or cracked, faucet and tap repair diagnoses the exact cause or fits a new tap.