A leaking tap is one of those plumbing issues every Sydney homeowner faces sooner or later. That irritating drip… drip… drip… is more than just a noise problem — it wastes water, drives up your bills, damages fixtures and can signal much bigger underlying issues.
Whether you’re in a modern apartment in the Eastern Suburbs, a federation home in the Inner West, a coastal property on the Northern Beaches, a family home in Western Sydney, or anywhere across Greater Sydney, leaking taps are one of the most common (and most preventable) plumbing issues.
Jayco Plumbing has repaired thousands of leaking taps over the past 20+ years, and this guide gives you a complete, honest breakdown of the real causes, real fixes and real long-term solutions.
WHAT EXACTLY IS A “LEAKING TAP”?
A leaking tap can mean:
- Dripping from the spout
- Water seeping from the base
- Water leaking under the sink
- Handle leaking when turned on
- Mixer tap dripping even when “off”
- Taps that keep running or don’t shut off fully
Even a slow drip can waste thousands of litres per year.
This isn’t something you ignore — it’s something you fix.
WHY TAPS LEAK — THE REAL CAUSES
After inspecting thousands of tap systems across Sydney, these are the true culprits:
1. Worn Tap Washers
The most common cause in traditional taps.
Washers harden over time and can no longer form a seal.
2. Ceramic Disc Failure (Mixer Taps)
Mixer taps use ceramic cartridges.
When they fail, the tap drips.
3. High Water Pressure
Many Sydney suburbs suffer from dangerously high mains pressure (500–800 kPa).
High pressure destroys:
- Washers
- Cartridges
- O-rings
- Tap bodies
High water pressure = short tap lifespan.
4. Worn O-Rings
O-rings inside the tap dry, split or deteriorate.
5. Corroded Internal Parts
Especially in:
- Older homes
- Coastal suburbs (salt exposure)
- Hard-water areas
6. Poor Installation or DIY Repairs
Incorrect tap assembly always leads to leaks.
7. Faulty Mixer Cartridges
Cheap or low-quality mixers fail early.
8. Old or Poor-Quality Taps
Not all taps are built to last.
Cheaper taps wear out quickly.
9. Hidden Leaks Under the Sink
A leaking tap doesn’t always drip visibly.
Sometimes the leak is:
- Behind the vanity
- In a cupboard
- Behind wall tiles
SIGNS YOU HAVE A LEAKING TAP
1. Dripping or Running Water
The obvious sign.
2. Handles Hard to Turn
Aging washers or cartridges.
3. Water Hammer
Loud bangs in pipes — usually high pressure.
4. Stiff or Loose Handles
Internal parts worn out.
5. Water Pooling Under the Sink
A hidden leak.
6. Mixer Tap Temperature Issues
Internal mixing cartridge failure.
7. Spout Drips After Being Turned Off
Common in old taps.
8. Increased Water Bills
Slow leaks add up.
THE REAL COST OF A LEAKING TAP IN SYDNEY
A single dripping tap can waste:
- Up to 20,000+ litres per year
- Hundreds of dollars in water charges
- Thousands of dollars in damage if leaking under cupboards
A leaking tap is one of the cheapest plumbing repairs — but one of the most expensive problems if ignored.
HOW PROFESSIONALS FIX LEAKING TAPS PROPERLY
Jayco Plumbing follows a precise system for tap repairs.Diagnose the Tap Type
Traditional Taps
(Separate hot and cold taps)
Use washers, O-rings and spindles.
Mixer Taps
(One handle controlling hot + cold)
Use ceramic disc cartridges.
Identifying the tap type tells us what’s likely wrong.
Disassemble & Inspect
We inspect:
- Washer
- Seat
- Spindle
- O-rings
- Cartridge
- Body
- Seals
This determines whether repair or replacement is best.
Repair or Replace
Traditional Tap Repairs
Usually involves:
- New washers
- New O-rings
- Re-seating the tap
- Re-greasing parts
Mixer Tap Repairs
Requires:
- New ceramic cartridge
- Re-sealing body
- Checking pressure
Under-Sink Leak Repairs
Fixing:
- Loose hoses
- Cracked fittings
- Faulty flexi hoses
Tap Replacement
Some taps aren’t worth repairing:
- Corroded
- Cheap builders-grade taps
- Taps with worn bodies
- Taps older than 10–15 years
A modern mixer tap is often a better investment.
Pressure Testing
High water pressure destroys taps.
We test mains pressure and recommend PRV installation if needed.
Final Inspection
We ensure:
- No leaks
- Smooth operation
- Balanced hot/cold mix
Correct water flow
WHEN YOU SHOULD REPAIR VS REPLACE A TAP
Repair If:
- Tap is under 10 years old
- Tap body is still strong
- Only the internal parts have failed
- Minor leaks or drips
Replace If:
- Tap is old or corroded
- Mixer cartridge keeps failing
- High-end taps no longer have replacement parts
- Tap is leaking from multiple places
- Flexi hoses are ageing
A modern mixer tap is often the simplest long-term fix.
THE COST OF LEAKING TAP REPAIRS IN SYDNEY
Typical Repairs
- Washer replacement: $120–$180
- Mixer cartridge: $180–$280
- Full tap service: $150–$250
- Under-sink leak repair: $120–$240
Tap Replacement
- Standard mixer tap supplied + installed: $250–$450
- Premium tap supplied + installed: $350–$800
Prices depend on:
- Tap type
- Access
- Parts required
- Existing damage
We provide upfront pricing with no surprises.
HOW TO PREVENT LEAKING TAPS IN THE FUTURE
1. Install a Pressure Limiting Valve (PRV)
Sydney pressure kills taps.
2. Avoid Cheap Taps
They fail early. Choose reputable brands.
3. Inspect Flexi Hoses Annually
These are common burst and leak points.
4. Don’t Force Tap Handles
Over-tightening damages washers.
5. Get Your System Checked Every 2–3 Years
Small issues turn into big leaks if ignored.
