5 Common Reasons Behind Leaky Taps and How to Fix Them

Although some people might not consider leaky taps a cause for much concern, they’re nevertheless problems that shouldn’t be taken lightly. The sound of dripping water can be mildly infuriating but, if left unattended for a long time, a tiny leak can waste a significant amount of water and can cause an increase in your utility bills. It may even lead to more disastrous water-related issues, like indoor flooding or a burst pipe.

Of course, you can always call Mains Plumbers to handle leaky taps. We are professional plumbers Dunedin residents trust, and we can fix any sort of plumbing troubles you may have. That said, if the problem is still small enough, you can try to locate the issue and handle it yourself. There are several common reasons behind these leaks, and if you familiarise yourself with these causes, you can apply the appropriate repair method and stop the leak using some basic plumbing skills. Here are the common causes behind leaky taps and how to fix them.

Poorly Installed Taps

One of the most common causes of a leaky tap is improper installation. If taps are not aligned properly, or when the fittings and seals aren’t tightened adequately, they can develop leaks immediately or over time. In some cases, incorrect installation can also damage the tap’s internal components, resulting in bigger leaks.

If you suspect the leak is caused by poorly installed taps, you can repair the problem by following these steps:

1. Turn off the water supply to the tap.
2. Remove the tap handle and check for any loose connections or misalignments.
3. Realign and ensure all fittings are tight before securing the tap properly to the sink or basin.
4. If the problem persists, disassemble the tap and inspect for damage.
5. If there is damage, replace any damaged parts and reassemble the tap before securing it in place.
   

Worn O-Rings

O-rings are small rubber rings that seal the joints of pipe connections and prevent water from leaking. Over time, these O-rings can become worn, cracked, or displaced, resulting in leaks. This issue is often encountered in older taps or in taps that have been subjected to frequent use. Worn O-rings are usually the culprit behind leaks at the base of the tap or around the handle. Here’s what you can do to address this plumbing issue:

1. Turn off the water supply to the tap.
2. Use a spanner to remove the tap handle and the retaining nut.
3. Carefully take out the stem or cartridge to access the O-rings.
4. Inspect the O-rings for signs of wear or damage.
5. Replace worn O-rings with new ones of the same size and material.
6. Reassemble the tap, ensuring all components are securely tightened.
7. Turn the water supply back on and test the tap to confirm that the leak has been fixed.
   

Washer Issues

Washers are crucial components in taps, designed to provide a seal that prevents water from escaping. They are also a common culprit behind leaks, as they become worn, stiff, or dislodged over the years. This problem is particularly common in compression taps, where the washer is repeatedly compressed to stop water flow. Here’s how to repair problematic washers in leaky taps:

1. Turn off the water supply to the tap.
2. Remove the tap handle and the decorative cap, if present.
3. Unscrew the packing nut to access the stem.
4. Remove the stem to reveal the washer at the bottom.
5. Inspect the washer for wear, cracks, or stiffness.
6. Replace the worn washer with a new one of the same size.
7. Reassemble the tap, ensuring all components are securely tightened.
8. Turn the water supply back on and test the tap for leaks.
   

Corroded Valve Seats

The valve seat is the connection point between the tap and the spout. If this part corrodes, it can cause a leak even if the washers and O-rings are in good condition. Valve valve seats usually get corroded due to mineral deposits and corrosion build-up, which is particularly common in areas with hard water. To deal with this issue, you can do the following:

1. Turn off the water supply to the tap.
2. Remove the tap handle and the valve stem.
3. Inspect the valve seat for signs of corrosion or mineral build-up.
4. Clean the valve seat using a wire brush or valve seat cleaner.
5. If the valve seat is severely corroded, install a replacement.
6. Reassemble the tap, ensuring all components are securely tightened.
7. Turn the water supply back on and test the tap for leaks.
   

Water Pressure Problems

Excessive water pressure can cause taps to leak by forcing too much water through small gaps in the tap’s components. This issue is often overlooked because some people may view high water pressure as something good (as opposed to low water pressure), but it can lead to significant leaks and even damage to the tap. It can also cause leaks at various points in the tap, including the spout, the handle, and the base. You can correct this problem by doing the following:

1. Check the water pressure in your home using a pressure gauge; your home’s water pressure should not exceed 500 kPa.
2. If the pressure is too high, adjust the pressure regulator on your main water line.
3. Inspect the tap for any signs of damage caused by high pressure.
4. Turn the water supply back on and test the tap for leaks.
5. Consider installing a water pressure-reducing valve if the problem persists.
6. If any component needs to be repaired or replaced, consider having an emergency plumber in Dunedin handle the task.
   

Leaky taps are a common household issue that can lead to wasted water and increased utility bills. By understanding the common causes, you can easily identify and fix them yourself.

However, if you prefer to let the professionals take on the repairs and replacements, Mains Plumbers is a name you can trust. We offer 24/7 emergency plumbing services in Dunedin, New Zealand, so you can rest assured that we’ll be there to help you with your leaky taps, day or night. For more information about our services, visit our Contact Us page and complete the form. You can reach us by calling us at 03-488-6000 or 027-436-6058. You can also email us at office@mainsplumbers.co.nz.