Mon – Sun: 24/7 Plumbing
4.7-Star Service


(03) 9122 8652

A leaky tap’s persistent drip can quickly escalate from a minor annoyance to a major headache. Beyond the incessant noise, taps leaking can lead to significant water wastage, inflating your utility bills and potentially causing water damage to surrounding areas. Understanding the common culprits behind a dripping tap is crucial to addressing the issue promptly and preventing further consequences.

This comprehensive guide looks into the anatomy of taps, shedding light on their intricate components and how they function. We’ll explore the most prevalent causes of leaky taps, including worn washers, faulty valve seats, mineral build-up, and loose components.

Additionally, we’ll provide insights into identifying the source of the leak, deciding between DIY repairs or professional assistance, preventative maintenance strategies, and determining when replacement is the more viable option. By the end, you’ll be equipped with the knowledge to tackle leaky tap woes effectively.

The Anatomy of a Tap

To understand the common causes of leaking taps, it’s essential to grasp the basic components that make up a tap and how they work together. At the core of every tap is the valve seat, a carefully crafted surface that connects to the water supply line. When the tap is closed, a washer or valve cartridge presses against the valve seat, creating a watertight seal that prevents water flow.

The tap body houses several crucial components, including the brass valve stem, which is typically made of brass. This stem extends through the tap body and connects to the faucet handle or tap button. The valve seat connects the faucet and the spout. As you turn the handle, the inner valve stem moves up and down, causing the washer or cartridge to engage or disengage from the valve seat, allowing or stopping the flow of cold or hot water.

Dripping Tap Mineral Buld

Tap washers and jumper valves are vital components in compression faucets, while cartridge faucets feature a cylindrical body and a metal ball that controls water flow. Regardless of the tap type, these components work in harmony to regulate water pressure and prevent leaks.

However, leaks can occur when these components wear out, become damaged, or fail to function properly. A worn-out washer or jumper valve, a corroded or damaged valve seat, mineral build-up, or loose parts can all contribute to leaking taps. Proper installation and regular maintenance are crucial to ensure these components work as intended and prevent excessive water waste and potential water damage.

Common Causes of a Leaky Tap

Dripping Tap Rust

Worn or Damaged Washers/O-rings

Washers and O-rings are small yet crucial components that play a vital role in preventing leaks. Over time, these rubber or synthetic components can deteriorate due to wear and tear, exposure to heat, and mineral build-up from the water supply. As washers and O-rings age, they become brittle, lose their flexibility, and can develop cracks or distortions.

When washers or O-rings are worn out, they fail to create a proper seal between the valve seat and the faucet spout or tap handles. This allows water to seep through, resulting in a dripping faucet or leaking tap. In compression faucets, a broken washer or jumper valve can cause a continuous leak, while in cartridge faucets, a worn O-ring may lead to a minor leak or dripping.

To identify worn washers or O-rings, inspect them closely for signs of cracking, brittleness, or distortion. If the tap leaks when turned off, it clearly indicates that the washer or O-ring needs replacement. Fortunately, these components are relatively inexpensive and can often be found at your local hardware store.

Faulty Valve Seat

The valve seat is a critical component that connects the water supply line to the tap body. Its primary function is to create a watertight seal when the tap is closed, preventing water flow. However, over time, the valve seat can become damaged or corroded, compromising its ability to form a proper seal.

A damaged or corroded valve seat can result from excessive water pressure, mineral build-up, or improper installation. Even a minor imperfection on the valve seat’s surface can prevent the washer or cartridge from sealing correctly, leading to a leaking faucet or tap.

Signs of a faulty valve seat include persistent dripping even after replacing the washers or O-rings, water leaking from the tap bonnet or valve body, and difficulty turning the faucet handles or tap buttons. You may also notice discoloured or rusty water, indicating corrosion within the plumbing system.

Identifying the Source of the Leak

Dripping Bathroom Tap

Inspect the Tap Closely

Check for any visible signs of leakage around the faucet spout, tap handles, or valve body. Look for water stains, mineral build-up, or dripping water.

Listen for the Leak

Turn off the water supply and let the tap drain completely. In a quiet environment, you may be able to hear the faint sound of water escaping, which can help locate the leak’s origin.

Check the Tap Components

Remove the tap handles, cover plate, or faucet aerator (if applicable) to access the internal components. Examine the O-rings, washers, and jumper valves for signs of wear or damage.

Test the Water Pressure

Turn the water supply back on and observe the flow of water. Excessive water pressure can strain the tap components and cause leaks.

Proper diagnosis is crucial before attempting any repairs, as the source of the leak can vary from worn washers to faulty valve seats or even issues with the plumbing system itself. If the leak persists or you’re unsure of the cause, it’s best to consult a professional plumber.

DIY vs. Professional Repair

Dripping Tap

DIY Repair Options

DIY repairs can be viable for minor leaks caused by worn washers or O-rings. To replace a tap washer, turn off the water supply, remove the handle and stem screw, and use needle-nose pliers to pull out the old washer. Install the new washer and jumper valve, reassemble the tap, and turn the water back on.

You’ll need to unscrew the stem using a shifting wrench for compression washer faucets. Once disassembled, replace the rubber washers and any worn parts before reinstalling the valve stem and handles.

When to Seek Professional Help

However, professional assistance is recommended in several scenarios. If the leak persists after replacing washers, it may indicate a faulty valve seat or issues with the home’s water pressure. Attempting complex repairs without proper knowledge can lead to further damage or leaking faucets.

Tree roots, broken pipes, or pipe issues can also contribute to leaks, requiring the expertise of a licensed plumber. Professionals have the tools and experience to diagnose and address these underlying problems effectively.

Benefits of Hiring a Professional Plumber

Hiring an experienced plumber offers several benefits. They can accurately identify the root cause of the leak, whether it’s due to worn components, not being installed properly, or broader plumbing system problems. With their expertise, they can ensure all repairs are done correctly and efficiently, preventing future leaks and water damage.

While DIY repairs may suffice for minor tap leaks, it’s crucial to recognise when professional assistance is necessary. A licensed plumber’s knowledge and experience can save you time, money, and hassle in the long run, ensuring your plumbing system functions optimally.

Don’t Let a Leaky Faucet Become a Plumbing Nightmare

A leaking tap can be more than just an annoyance – it’s a waste of precious water resources and a potential indicator of underlying plumbing issues. This article has explored the common causes of leaky faucets, such as worn-out washers, O-rings, and faulty valve seats. We’ve discussed methods to identify the source of the leak and provided guidance on when DIY repairs may be appropriate.

However, it’s crucial to address a leaking tap promptly before it escalates into a more significant problem. Ignoring dripping water can lead to water damage, mould growth, and increased utility bills. In some cases, the issue may stem from deeper problems within your home’s water pipes or excessive water pressure.

Don’t hesitate to seek professional assistance if you’re unsure about the cause or feel uncomfortable attempting the repair yourself. A licensed plumber has the expertise and tools to diagnose and fix the issue properly, ensuring your taps work efficiently and your plumbing system remains in top condition.

Call WP Plumbing, for reliable and affordable solutions to your leaky faucets and plumbing needs.

How To Solve Common Tap Problems

How To Solve Common Tap Problems

Discover practical solutions to common tap problems such as leaks, drips, and low water pressure.

Common Causes of Low Water Pressure

Common Causes of Low Water Pressure

Are you wondering about the common causes of low water pressure in the house? Follow our guide as we discuss how you can identify the cause of our water pressure issue.

5 Common Issues With Hot Water Heaters

5 Common Issues With Hot Water Heaters

Is your hot water heater giving you trouble? Here we have listed some of the most common water heater issues and solutions on how to fix them.

WP Plumbing Van
Call Now!