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Why Is My Tap Dripping? Common Causes Explained
Plumbing 3 min read

Why Is My Tap Dripping? Common Causes Explained

06 October 2026· by QuickFIX Team

Introduction

A dripping tap might seem harmless, but even a slow leak can waste thousands of litres of water each month. The good news is most common tap leaks have simple causes you can identify before calling a professional.

Worn-Out Washers

The rubber washer inside your tap creates the watertight seal when you close the handle. Over time, friction and mineral deposits wear it down until water seeps through. This is the single most common cause of a dripping tap and a straightforward fix for a plumber.

Damaged O-Rings

If your tap leaks around the handle rather than the spout, the O-ring is usually to blame. These small rubber rings sit around the valve stem and degrade with age, especially in hard-water areas.

Corroded Valve Seat

The valve seat connects the tap to the spout. Sediment and mineral buildup can corrode this metal surface over time, preventing the washer from sealing properly. A plumber can resurface or replace the seat.

High Water Pressure

If leaks appear only at certain times of day, excessively high water pressure may be forcing water past the seal. A pressure-reducing valve on your main supply line solves this and protects your entire plumbing system.

When to Call a Professional

If you have replaced the washer and the leak persists, or if you notice water staining around the base of the tap, it is time to call a verified plumber. QuickFIX technicians carry the parts and tools to fix most tap leaks in a single visit.

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