A dripping tap is more than just an annoying sound. It’s a signal of a plumbing issue that can lead to costly water damage and unexpectedly high utility bills. Understanding the cause of a leaking tap is the first step to a proper repair.

In this guide, we’ll explore the common reasons why taps leak and explain the importance of calling a professional plumber when you encounter a leak.

Common Reasons Taps Leak

While a leaking tap can have several causes, the problem often lies in the tap’s internal components. The type of tap in your home will determine what part needs to be repaired or replaced.

  • Standard Spindle Taps: These are the traditional taps you turn multiple times to control water flow. Inside, a spindle presses a small rubber washer against a brass seat to stop the water. A drip can be caused by a worn-out or brittle washer. However, it can also be a sign that the brass washer seat in the wall breech is cracked and needs to be re-seated or grinded smooth in order for the washer to seal properly. An external leak from the tap body is most commonly caused by a worn-out spindle O-ring.
  • Quarter-Turn Taps: Common in newer homes, these taps require only a quarter-turn to go from off to full flow. They use a ceramic disc spindle instead of a washer. A leak from a quarter-turn tap can be caused by a damaged ceramic disc spindle or a worn-out rubber seal that presses against the in-wall breech washer seat. An external leak around the tap body flange is often due to a worn spindle O-ring or a cracked breech washer seat.
  • Mixer Taps: These taps, also common in newer homes, use a single lever to control both the flow and temperature of the water. Inside, a specialized cartridge mixes the hot and cold water. When a mixer tap leaks, it’s typically a sign that the cartridge has failed and needs to be replaced.

A Hidden Culprit: Excessive Water Pressure

Another very common, yet often overlooked, cause of tap leaks is excessive water pressure. According to the Australian standard AS/NZS 3500, the water pressure in a building should not exceed 500kpa.

When water pressure is too high, it puts an immense strain on all your plumbing fixtures and pipes, including the internal components of your taps. This constant stress can cause washers, seals, and other parts to wear out much faster than they should, leading to leaks and the premature failure of your taps.

The Importance of Professional Leaking Tap Repair

It’s tempting to put off fixing a leaky tap, but delaying the repair can lead to a range of issues that are more costly and difficult to fix in the long run.

  • Prevents Water Damage: A constant drip, even if it’s contained in the sink, can cause erosion and leave a permanent mark on the surface. If the leak is at the base of the tap, it can drip into your cabinets and lead to hidden water damage, mould, and structural issues.
  • Reduces Water Bills: A seemingly small, slow drip can waste as much as 5,500 litres of water a year. This not only has a negative environmental impact but also results in a higher water bill for you.
  • Requires Expert Knowledge: Repairing a leaking tap can be a difficult DIY job. With many different types of taps—from spindle to mixer taps—knowing the correct parts and tools to use is a challenge. A professional plumber ensures the right part is sourced and the leak is correctly repaired the first time.

By hiring a licensed plumber, you can be sure that the repair is done correctly and is compliant, giving you peace of mind and saving you money in the long run.

For all your leaking tap repairs and plumbing needs, contact Your Choice Plumbers for a fast, professional service!