Sink Tap Repair: Fix Common Issues Yourself

Quick answer

To fix a leaky sink tap, turn off the water supply, disassemble the tap, replace worn washers or O-rings, and reassemble. If the tap still leaks, consider replacing the entire cartridge or valve.

Confirm the symptom

• Water drips from the tap even when turned off
• Tap handle is stiff or hard to turn
• Water continues to run after turning off the tap
• Low water pressure from the tap
• Water leaks around the base of the tap

Tools and prep

• Adjustable wrench
• Screwdrivers (flathead and Phillips)
• Plumber's tape
• Replacement washers or O-rings
• Bucket or towel to catch water
• Turn off water supply under the sink before starting
• Wear rubber gloves to protect hands from sharp edges

Step-by-step troubleshooting

1. Turn Off Water Supply
   Do: Locate and turn off the shut-off valves under the sink. If there are no valves, turn off the main water supply to the house.
   Observe: Water stops flowing from the tap.
   Means: Water supply is successfully cut off.
   Next: Drain the tap
2. Drain the Tap
   Do: Turn on the tap to release any remaining water in the pipes.
   Observe: Water stops flowing completely.
   Means: Tap is drained and ready for disassembly.
   Next: Disassemble the tap
3. Disassemble the Tap
   Do: Use a screwdriver to remove the handle and expose the internal components. Take note of the order of parts for reassembly.
   Observe: Internal components are visible.
   Means: Tap is ready for inspection.
   Next: Inspect and Replace Parts
4. Inspect and Replace Parts
   Do: Check for worn washers, damaged O-rings, or a faulty cartridge. Replace any damaged parts with new ones of the same size and type.
   Observe: Parts appear clean and undamaged or have been replaced.
   Means: Potential causes of the leak are addressed.
   Next: Reassemble the Tap
5. Reassemble the Tap
   Do: Put the tap back together in the reverse order of disassembly. Apply plumber's tape to threads for a better seal.
   Observe: Tap is fully reassembled and secure.
   Means: Tap is ready for testing.
   Next: Test the Tap
6. Test the Tap
   Do: Turn the water supply back on and check for leaks. Run the tap to ensure it functions smoothly and without drips.
   Observe: Tap works without leaks or drips.
   Means: Repair is successful.
   Next: Done

Common causes

Parts matching

Match your sink tap issue to the correct replacement part:

• Worn washer – Replace with a new washer of the same size
• Damaged O-ring – Use a new O-ring that fits the tap's threads
• Faulty cartridge – Purchase a replacement cartridge compatible with your tap model
• Corroded valve seat – Replace with a new valve seat or use a seat wrench to recondition it
• Clogged aerator – Clean or replace the aerator to restore water flow

Check the manufacturer's website for specific part numbers and compatibility information.

When to call a professional

• The tap continues to leak after replacing all parts
• You notice water damage or mold around the sink area
• The tap is old and requires replacement of the entire unit
• You are unable to locate the water shut-off valve
• You suspect a leak in the plumbing pipes under the sink
• You are unsure about the type of tap or parts needed for repair

FAQ

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