A leaking mixer tap can cause unnecessary water wastage, higher utility bills, and the frustration of constant dripping. If you’ve noticed a dripping mixer tap in your kitchen or bathroom, it’s a common issue, but don’t worry—it’s something you can fix yourself. In this article, we’ll walk you through the simple steps to fix a leaking mixer tap and get your tap working like new again.
Whether it’s the hot and cold water blending incorrectly or a small drip that won’t stop, this guide will help you pinpoint the root cause and resolve the issue swiftly. If you’re not confident in your DIY skills, or if the leak persists despite your best efforts, don’t hesitate to contact Sydney Blocked Drains for professional assistance.
Key Takeaways:
- Identify the cause: Learn how to find out if the problem lies with the mixer’s ceramic cartridge or another component.
- Gather the right tools: You’ll need simple tools like an allen key, adjustable wrench, and a replacement cartridge.
- Fix the leak quickly: Follow the steps to repair or replace faulty components and restore the tap’s functionality.
What Causes a Leaking Mixer Tap?
Before we dive into the fix, it’s essential to understand what causes a leaking mixer tap. Generally, the main culprit is the ceramic cartridge inside the tap. The ceramic cartridge is responsible for controlling the water flow and temperature in a mixer tap. Over time, it can wear down, causing water to leak from the tap. Other possible causes include:
- Faulty internal rubber seals or o-rings
- Worn-out washers or ceramic discs
- A loose tap handle or grub screw
- Corroded or damaged internal components
The good news is that most of these issues can be resolved with simple tools and a replacement part or two.
Step-by-Step Guide: How to Fix a Leaking Mixer Tap
1. Turn Off the Water Supply
Before you start any repair work, make sure to turn off the water supply to your tap. Most taps have isolation valves under the sink, which can be used to cut off the water supply to that particular tap. If you can’t find isolation valves, you may need to turn off the main water supply.
2. Disassemble the Tap
Now that the water is turned off, it’s time to carefully remove the mixer tap handle:
- Remove the decorative cap (if applicable) on top of the handle.
- Use an allen key to remove the small grub screw holding the handle in place.
- Gently pull off the tap handle to expose the cartridge inside.
3. Examine the Ceramic Cartridge
Once the handle is removed, you’ll see the mixer’s ceramic cartridge. This is often the source of the leak. Inspect the cartridge for signs of wear, cracking, or damage. If it looks worn out or faulty, it’s time to replace it.
4. Remove the Old Cartridge
To remove the old ceramic cartridge, you may need to unscrew a retaining nut using an adjustable spanner. Carefully remove the cartridge and any other damaged parts, like rubber seals or washers.
5. Replace the Cartridge
Once the old cartridge is removed, insert a new ceramic cartridge that matches the size and specifications of the old one. Ensure it’s positioned correctly before reassembling the tap. Use silicone grease on the new rubber seals to ensure a watertight seal.
6. Reassemble the Tap
Once the new cartridge is in place, carefully reassemble the tap. Screw the retaining nut back into place, reattach the tap handle, and secure it with the grub screw using the allen key. Replace any decorative caps if necessary.
7. Test the Tap
Now, turn the water supply back on. Check the mixer tap for leaks by turning it on and off. If it’s working correctly, the leak should be fixed, and the water should flow smoothly without any drips.
Troubleshooting: What if the Leak Persists?
If the leak continues after you’ve replaced the cartridge and seals, there may be another issue at play. Here’s what you can check:
- Is the tap body cracked? Sometimes, the tap body can crack due to wear or impact. If the body is damaged, replacing the cartridge won’t resolve the leak, and you may need to replace the entire tap.
- Are the internal components damaged? In rare cases, the internal parts of the mixer tap (such as the ceramic discs or o-rings) may be too worn out to fix with a simple replacement. If this is the case, a professional plumber can help.
If you’re unable to fix the leak on your own, Sydney Blocked Drains can help. Our expert plumbers are skilled at diagnosing and repairing leaking mixer taps quickly and efficiently. Contact us today for a fast, professional fix.
Final Words
Fixing a leaking mixer tap is a relatively simple DIY job that can save you from wasting water and causing further damage to your plumbing. By following the steps above, you can address the faulty cartridge, worn seals, or damaged washers and restore your tap’s functionality.
If you don’t feel confident performing the repair, or if the leak persists despite your efforts, don’t hesitate to contact Sydney Blocked Drains. We’re available 24/7 to help with all your plumbing needs, from leaking taps to blocked drains and everything in between.
Ready to fix your leaking tap?
Don’t let that annoying drip drive you crazy any longer! Contact Sydney Blocked Drains Now for fast, reliable, and expert plumbing solutions that get your tap working perfectly again. Whether it’s a minor leak or a bigger issue, our same-day service means you won’t have to wait around. Call us or book online for quick assistance and say goodbye to your leaking tap woes today!
Frequently Asked Questions
1. What causes a leaking mixer tap?
A leaking mixer tap is often caused by a faulty ceramic cartridge, worn o-rings, washer damage, or a loose grub screw. Over time, the internal components wear down, causing leaks or drips.
2. Can I fix a leaking mixer tap myself?
Yes, fixing a leaking mixer tap is often a simple DIY job. With the right tools like an allen key, adjustable wrench, and a replacement cartridge, you can replace faulty parts and fix the leak. If the issue persists, it may be time to call a professional plumber.
3. How do I know if the ceramic cartridge needs replacing?
If the tap continues to drip after you’ve tightened the handle and inspected the other components, the ceramic cartridge may be faulty. Look for signs of cracks or wear on the cartridge, which can cause water to leak from the tap.
4. What tools do I need to fix a leaking mixer tap?
To fix a leaking mixer tap, you’ll need an allen key, adjustable wrench, replacement cartridge, silicone grease (for seals), and possibly an adjustable spanner to loosen any retaining nuts.
5. What should I do if the leak doesn’t stop after replacing the cartridge?
If replacing the ceramic cartridge doesn’t fix the leak, the issue might lie with the tap body or internal components. In this case, it’s best to contact a professional plumber to diagnose and repair the problem.

