That slow, rhythmic drip from a tap you thought you turned off all the way. It's easy to dismiss as a minor irritation — until you realise a single dripping tap can waste over 9,000 litres of water per year. In Queensland, where water conservation matters and water bills can sting, that drip is costing you money every single day.
The good news? Most dripping taps in Australian homes are caused by one of just a few simple, inexpensive problems — and the most common one can be fixed in under 30 minutes with a basic spanner and hardware that costs a couple of dollars. You don't need to be a plumbing expert. You just need to know the right trick.
In this guide, we'll show you exactly how to diagnose what's causing your dripping tap, how to fix it yourself, and when it's worth calling a licensed Gold Coast plumber instead.
Is Your Tap Actually Dripping? Identify the Type First
Not all dripping taps are the same, and the fix depends on what type of tap you have.
Compression taps (traditional two-handle taps):
These use a rubber washer that gets squeezed against a valve seat when you turn the handle. The washer wears out over time → water leaks past → dripping. This is by far the most common type in older Gold Coast homes.
Ceramic disc taps (single lever or quarter-turn taps):
These use a ceramic cartridge instead of rubber washers. They're much longer-lasting but the ceramic disc can crack or the O-rings around it can deteriorate.
Ball taps (single-handle taps that move in all directions):
Common in some kitchen taps. The internal ball mechanism has O-rings and springs that wear out.
Cartridge taps (most modern single-handle taps):
Similar to ceramic disc taps — the cartridge is the wear component.
The trick that works for the vast majority of dripping taps in Australian homes? Replacing the tap washer. If you have an older compression-style tap, this is almost certainly your fix.
Why Taps Drip: The Root Causes
Worn rubber washer:
The most common cause by far. Rubber washers harden and compress over years of use, losing their ability to seat against the valve and form a water-tight seal. Each time you turn the tap, the washer wears a little more.
Damaged valve seat:
The metal seat inside the tap body that the washer presses against can become pitted or corroded over time. Even a new washer won't seal against a rough or scored valve seat.
Loose or worn packing nut:
The packing nut seals the tap stem where it exits the body. If this seal fails, water drips from around the handle rather than from the spout — a slightly different problem.
Worn O-rings:
Relevant to ceramic, ball, and cartridge taps. O-rings are small rubber rings that seal the cartridge or ball mechanism. They harden and crack with age.
High water pressure:
Excessively high mains water pressure accelerates washer wear significantly. If your pressure exceeds 500 kPa (the Australian standard maximum), washers wear out much faster than normal.
The Simple Trick: How to Replace a Tap Washer
This fix is specifically for compression (traditional) taps — the most common dripping tap type in Gold Coast homes.
You'll need:
- Adjustable spanner
- Flat-head and Phillips screwdrivers
- Replacement tap washers (buy an assorted pack — about $5 at any hardware store)
- Optional: tap lubricant grease
- Old towel
Step 1: Turn Off the Water Supply
Turn off the isolation valve under the sink by rotating it clockwise until it stops. If there's no isolation valve, turn off the mains cold water at your water meter.
Turn the dripping tap to the fully open position to release any pressure and drain remaining water from the line.
Step 2: Remove the Handle
Most tap handles have a decorative cap (hot/cold indicator) covering a screw. Use a flat screwdriver or your fingernail to pop this cap off, revealing a Phillips or flat-head screw. Remove the screw and lift the handle off.
Step 3: Remove the Packing Nut
You'll see a hexagonal nut (the packing nut) just below where the handle was. Use your adjustable spanner to unscrew this nut counter-clockwise. Once removed, pull the tap stem straight up and out of the tap body.
Step 4: The Trick — Locate and Replace the Washer
At the bottom of the tap stem, you'll see a circular rubber washer held in place by a brass screw. This is the component that's almost certainly causing your drip. Look at it closely:
- If it's flat and hard (like a piece of hard plastic) — definitely replace it
- If it's cracked, deformed, or has a groove worn into it — replace it
- If it looks perfectly fine — you may have a valve seat or O-ring issue instead
The trick:
Simply unscrew the brass screw, pop out the old washer, and press a new matching washer into place. Choose a replacement that matches the diameter exactly from your assorted pack. Tighten the brass screw firmly but don't overtighten — you can crack the brass.
A thin smear of tap lubricant grease on the new washer helps it seat properly and extends its life.
Step 5: Inspect the Valve Seat
Look down into the tap body at the valve seat — the circular opening at the bottom. Run your finger around it. It should feel smooth.
If it feels rough, pitted, or scratched, the new washer may not seal properly. A tap seat grinder (available at hardware stores for about $20) can resurface the seat, or it's worth calling a plumber to regrind it properly.
Step 6: Reassemble and Test
Reinstall the tap stem, hand-tighten then spanner-tighten the packing nut, replace the handle and screw, and snap the cap back on.
Slowly turn the isolation valve back on. Turn the repaired tap on briefly and then fully off. Wait 60 seconds and watch the spout — if it no longer drips, you've nailed it.
When to Call a Gold Coast Plumber
The washer trick fixes the majority of dripping taps, but call a professional if:
- Your tap has ceramic or cartridge internals and the drip continues after replacing O-rings — cartridges often need full replacement with brand-matched parts
- Water is dripping from around the handle base rather than the spout — this is a packing or stem seal issue
- The valve seat is visibly damaged — seat regrinding requires specialist tools
- The tap body itself shows cracks or the housing is damaged
- Drip returns within a few weeks of replacing the washer — this often indicates high water pressure damaging washers prematurely
- You're not comfortable turning off the mains or can't locate your isolation valves
Coastal Plumbing Professionals services all of Gold Coast for dripping tap repairs, cartridge replacements, and full tap overhauls. We can usually attend the same day. Call 1300 590 085.
How to Prevent Taps From Dripping
Don't over-tighten taps:
Forcing a tap hard shut accelerates washer wear. Turn the tap just until the flow stops — no harder.
Replace washers proactively:
If you've had one washer fail, the others in your home are likely the same age. Consider replacing all tap washers in one session every 5–7 years as preventive maintenance.
Monitor water pressure:
High pressure is a silent tap-killer. A licensed plumber can install a pressure limiting valve (PLV) at your meter if your pressure exceeds 500 kPa.
Use tap lubricant:
A small amount of silicone-based tap lubricant on new washers during installation significantly extends washer life.
Address problems promptly:
A dripping tap that's ignored gets worse — the valve seat that starts rough from a worn washer becomes increasingly damaged with every drip.
Final Thoughts
The dripping tap trick — replacing the rubber washer — is one of the most cost-effective DIY repairs a Gold Coast homeowner can do. For a $5 pack of washers and 30 minutes, you can stop hundreds of litres of wasted water per week and eliminate that maddening drip.
If the washer trick doesn't work, or if you have ceramic disc or cartridge taps that need attention, the team at Coastal Plumbing Professionals are ready to help. Call 1300 590 085 or visit coastalplumbingprofessionals.com for fast, affordable tap repairs across Gold Coast.
Frequently Asked Questions
How much water does a dripping tap waste?
A tap dripping at one drop per second wastes approximately 9,000 litres per year. At Gold Coast water rates, that's a real cost on your bill — and a significant waste of a precious resource.
Can I fix a dripping tap without turning off the mains?
Only if your tap has a functioning isolation valve under the sink. Always turn off the water supply before opening any tap. Attempting a washer replacement with the water on will result in water flooding everywhere.
How do I know what size washer to buy?
Bring the old washer to the hardware store to match it, or buy an assorted pack that includes common sizes (3/8", 1/2", and 3/4" are the most common). The brass screw holding it in place will also give you an indication of size.
My tap drips even with a brand new washer — why?
The valve seat is likely damaged or scored. The tap seat needs to be reground or replaced. A licensed plumber can do this quickly, or it may be time for a tap replacement.
How long does a tap washer last?
In normal household use with adequate water pressure, a quality tap washer lasts 3–5 years. Higher water pressure or daily heavy use shortens this lifespan.
Resources
- Coastal Plumbing Professionals – Tap Repairs Gold Coast
- Queensland Building and Construction Commission
- SEQ Water – Water Conservation Tips
