How to stop my tap from leaking?

Jun 2023

Why does my tap leak? Understanding the common causes and solutions 

A leaking tap can be an annoyance in any household. The constant drip-drip sound, the wasted water, and the potential for increased water bills are all compelling reasons to address the issue promptly. However, many homeowners struggle to understand what is causing the leak in the first place. In this blog post, we will explore the common causes of tap leaks and provide insights into potential solutions. By understanding the underlying reasons behind tap leaks, you can take the necessary steps to fix them and ensure the efficient functioning of your plumbing system.

Worn out or damaged washers 

One of the most common causes of a leaking tap is a worn-out or damaged washer. The washer, located inside the tap's handle, helps create a watertight seal when the tap is turned off. Over time, constant usage can cause the washer to deteriorate, resulting in a leak.

Solution: Replacing the washer is often a simple and effective solution. Turn off the water supply, disassemble the tap handle, remove the old washer, and replace it with a new one of the appropriate size. This straightforward fix can resolve the leaking issue in many cases.

Loose or faulty O-rings 

O-rings are rubber or silicone seals found in the tap's mechanism, ensuring a watertight seal between moving parts. If these O-rings become loose or damaged, they can lead to leaks around the tap's spout.

Solution: To fix this issue, the tap may need to be disassembled to access the O-rings. Carefully remove the handle and spout, locate the O-rings, and replace them with new ones. Ensuring a proper fit and tight seal should eliminate the leak.

Corroded valve seat 

The valve seat is a crucial component located inside the tap, connecting the spout and the faucet. Over time, mineral deposits from water can accumulate and cause corrosion on the valve seat, leading to leaks around the spout.

Solution: Cleaning the valve seat is often the first step to addressing this issue. Use a cloth or a soft brush soaked in vinegar to remove mineral deposits and corrosion. If the corrosion is severe, professional assistance may be required to replace the valve seat.

Faulty cartridge or ceramic disc

In modern taps, cartridges or ceramic discs control the flow of water. If these internal components become worn or damaged, they can result in leaks or drips.

Solution: Depending on the type of tap, the cartridge or ceramic disc may need to be replaced. It is recommended to consult the manufacturer's instructions or seek professional help to ensure the correct replacement and proper installation.

High water pressure

Excessively high water pressure can put strain on the tap's components, causing leaks to occur. If your tap starts leaking shortly after installation or after a sudden increase in water pressure, this may be the underlying cause.

Solution: Installing a pressure regulator or reducing valve can help regulate the water pressure, preventing undue stress on the tap's internal mechanisms. A professional plumber can assess the water pressure in your home and recommend the appropriate solution.

Improper installation or sealing 

Sometimes, tap leaks can be attributed to poor installation or inadequate sealing during the initial setup. Loose connections, improper threading, or insufficient use of plumber's tape can result in leaks around the tap fittings.

Solution: Carefully inspect the installation of the tap, ensuring all connections are tight and secure. If necessary, disassemble the tap and reassemble it, applying plumber's tape to ensure a proper seal between the fittings.

Damaged or cracked pipes 

In some cases, tap leaks may not originate from the tap itself but from damaged or cracked pipes behind the wall or under the sink. The constant pressure and exposure to moisture can weaken pipes over time, leading to leaks.

Solution: If you suspect that the leak is originating from the pipes, it is advisable to seek professional assistance. A licensed plumber can locate and repair the damaged section of the pipe, ensuring a lasting solution.

A leaking tap is a common household issue, but understanding the causes can help you address it effectively. Whether it's a worn-out washer, loose O-ring, corroded valve seat, faulty cartridge, high water pressure, improper installation, or damaged pipes, there are solutions available for each situation. By taking prompt action and employing the appropriate fixes, you can save water, prevent further damage, and restore the functionality of your tap. If you encounter complex issues or lack plumbing expertise, it's always advisable to consult a professional plumber to ensure a proper and long-lasting resolution.