How to Fix a Dripping Tap Quickly
Last updated: 30 September 2026
Turn off the water, tighten the valve, replace the washer or cartridge, and reassemble.
Overview
A dripping tap is the most common plumbing problem in the UK and can waste thousands of litres of water per year. This guide covers the fastest fixes before you replace the tap.
Step-by-Step Fix
Before beginning any repair, ensure you have isolated power or water supplies. Clear your workspace, gather standard hand tools, and wear appropriate personal protective equipment (PPE).
- First turn off the water supply to the tap using the isolation valve usually located under the sink on the pipe feeding the tap. If there is no isolation valve turn off the main stopcock. Open the tap to release any residual water and confirm the supply is off.
- Place a towel or small container under the tap to catch any water. Dry the tap thoroughly to identify exactly where the water is coming from. A leak from the spout means the washer or cartridge is faulty. A leak from the base of the handle means the O ring or gland packing has worn.
- For traditional washer taps remove the tap head by prising off the decorative cap and unscrewing the retaining screw. Pull the handle off the spindle. Use an adjustable spanner to unscrew the valve nut and remove the spindle assembly.
- Inspect the rubber washer at the bottom of the spindle. A worn washer will be flattened cracked or hardened. Replace it with a new one of the same size and thickness. Take the old washer to a hardware store to match it exactly.
- For ceramic disc taps the cartridge must be replaced rather than repaired. Remove the tap handle and the retaining nut. Pull out the cartridge. Purchase a matching replacement cartridge and install it. Apply silicone grease to the new cartridge seals.
- Reassemble the tap by reversing the disassembly steps. Tighten the valve nut firmly but not overtightened. Reattach the handle and decorative cap. Turn the water supply back on slowly.
- Test the tap by opening and closing it several times. Check for leaks. If the tap no longer drips the repair is complete. If the drip persists the valve seat inside the tap may be worn. A seat reamer can smooth the seat but if the damage is severe the tap may need replacing.
- To prevent future drips replace tap washers every two to five years. In hard water areas washers can wear more quickly due to limescale. Consider installing a water softener to reduce limescale buildup.
- If the tap is very old and the valve seat is badly worn replacing the entire tap may be more cost effective than repeated repairs. A new tap costs thirty to one hundred and fifty pounds.
- If you are unsure about any step or the tap is a complex mixer design call a qualified plumber. A dripping tap is a small problem but it can waste significant amounts of water over time.
Common Symptoms & Diagnostic Resolutions
Review the common error codes and operating symptoms below to quickly identify the root cause of the fault before ordering replacement parts.
| Symptom / Code | Likely Root Cause | Recommended Resolution |
|---|---|---|
| Tap drips from spout | Worn washer or ceramic cartridge | Replace the washer on traditional taps or replace the cartridge on ceramic taps. |
| Tap drips from handle | Worn O ring or gland packing | Replace the O ring or repack the gland with PTFE tape. Apply silicone grease before reassembling. |
| Tap handle stiff | Limescale buildup in the cartridge | Soak the cartridge in vinegar to dissolve limescale. Apply silicone grease to the seals. |
| Drip returns after repair | Worn valve seat inside the tap body | Use a seat reamer to smooth the valve seat. If badly damaged replace the entire tap. |
Frequently Asked Questions
How do I fix a dripping tap quickly?
Turn off the water and remove the tap head. Replace the washer or cartridge. Reassemble and test. This typically takes fifteen to thirty minutes for a traditional tap.
How much water does a dripping tap waste?
A dripping tap can waste up to five thousand five hundred litres of water per year. That is enough to fill a small swimming pool. Fixing it quickly saves water and money.
Can I fix a dripping tap without turning off the water?
No you must turn off the water supply to the tap first. Otherwise water will spray out when you disassemble the tap. Use the isolation valve or the main stopcock.
When should I replace a dripping tap?
If the valve seat is badly worn if the tap is very old or if you have had to repair it multiple times replacement is often more cost effective. A new tap costs thirty to one hundred and fifty pounds.