A dripping tap might seem like a small annoyance, but over time it can waste thousands of litres of water and increase your water bill.
The good news is that many dripping taps have a simple cause, although some problems require a professional plumber.
Here’s why your tap is dripping and what you can do about it.
Common reasons your tap is dripping
Worn washer
The most common cause of a dripping tap is a worn rubber washer.
Over time, the washer becomes compressed and can no longer create a watertight seal, allowing water to drip continuously.
This is particularly common on older compression taps.
Damaged ceramic cartridge
Modern mixer taps often use ceramic cartridges instead of rubber washers.
If the cartridge becomes worn or damaged, the tap may continue dripping even when fully turned off.
Replacing the cartridge usually solves the problem.
Loose or worn O-ring
An O-ring is a small rubber seal that helps prevent leaks around the tap handle.
If it becomes worn or loose, you may notice water leaking around the handle or dripping from the spout.
High water pressure
Excessively high water pressure can sometimes prevent a tap from closing properly, causing an occasional drip.
If several taps in your home are affected, it may be worth asking a plumber to check your water pressure.
Corrosion or limescale
In hard water areas, mineral deposits can build up inside the tap.
Limescale may prevent seals from closing properly, leading to leaks and drips.
Regular cleaning can help reduce build-up.
Loose or damaged parts
Internal components naturally wear over time.
If parts become loose or damaged, the tap may no longer shut off completely.
Can I fix a dripping tap myself?
Sometimes.
If you’re confident with basic DIY, replacing a washer or cartridge is often a straightforward repair.
Before starting:
✔ Turn off the water supply.
✔ Plug the sink to avoid losing small parts.
✔ Use the correct replacement components.
If you’re unsure or the leak continues, it’s best to call a plumber.
Should I ignore a dripping tap?
No.
Even a slow drip can waste a surprising amount of water over time and may eventually become a larger leak.
Fixing the problem early is usually much cheaper than dealing with water damage later.
How much does it cost to repair a dripping tap?
The cost depends on the cause of the problem.
| Repair | Estimated 2026 cost |
|---|---|
| Replace washer | £60–£100 |
| Replace cartridge | £80–£150 |
| Replace O-ring | £60–£100 |
| Replace tap | £120–£300+ |
Prices vary depending on your location and the type of tap.
When should you replace the tap?
Repairing the tap is usually worthwhile if it’s in good condition.
However, replacing it may be the better option if:
- It regularly leaks.
- Replacement parts are unavailable.
- The tap is badly corroded.
- It’s more than 10–15 years old.
- You want a more modern design.
A new tap can also improve water efficiency and enhance the look of your kitchen or bathroom.
How to prevent taps from dripping
A few simple habits can help extend the life of your taps:
- Don’t overtighten the handles.
- Clean away limescale regularly.
- Fix small leaks promptly.
- Replace worn seals before they fail completely.
- Have persistent plumbing problems checked by a professional.
Frequently Asked Questions
Is a dripping tap an emergency?
Usually not.
However, if the leak suddenly becomes much worse or you can’t stop the water flow, you should contact an emergency plumber.
Can a dripping tap increase my water bill?
Yes.
Even a slow drip can waste a significant amount of water over time, leading to higher bills.
Why is my new tap dripping?
This could be caused by incorrect installation, high water pressure or a faulty cartridge.
If the tap is new, contact the installer or manufacturer before attempting repairs.
Should I repair or replace my tap?
If the repair is simple and inexpensive, repairing the tap is usually the best option.
If the tap is old, heavily worn or repeatedly leaking, replacement may offer better long-term value.
Final thoughts
A dripping tap may seem like a minor inconvenience, but ignoring it can lead to wasted water, higher bills and bigger plumbing problems.
In many cases, replacing a washer or cartridge is all that’s needed. If the leak continues or you’re unsure of the cause, a qualified plumber can quickly diagnose the problem and recommend the most cost-effective solution.
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Author: manager
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