How to Fix a Leaking Tap: Stop the Drip and Save Water

Mar 2, 2024

Tired of the drip, drip, drip? A leaking tap isn’t just annoying—it can waste thousands of litres of water each year and add up to big costs on your water bill. Thankfully, fixing a leaking tap is a quick DIY job when you know what to do. This guide walks you through everything step-by-step to stop the drip for good.

Need help? JR Gas & Water offers expert tap repairs and replacements across Brisbane and the Gold Coast.

💡 Key Takeaways

✅ Worn washers and O-rings are the most common causes
✅ You’ll need basic tools: wrench, screwdriver, replacement parts
✅ Follow 7 simple steps to fix the leak
✅ Prevent future issues with regular maintenance
✅ Call a plumber if the leak continues after repairs

🚰 Why Is My Tap Leaking? Common Causes

1. Worn-Out Washer or Jumper Valve

Symptoms: Drips from the spout even when the tap is off
Cause: Friction over time wears the washer down

2. Faulty O-Ring

Symptoms: Water around the base of the tap
Cause: A cracked or loose O-ring fails to seal properly

3. High Water Pressure

Symptoms: Taps leak even when tightly closed
Cause: Pressure pushes water past internal seals

Use a Puretec water filter or pressure-reducing valve to reduce strain on your fixtures.

4. Damaged Valve Seat

Symptoms: Water leaking from underneath the tap
Cause: Corrosion or mineral buildup on the valve seat

🧰 Tools You’ll Need

Adjustable wrench (or spanner)
Screwdriver
12mm tap washer
O-ring replacement
Plumber’s tape
Vinegar or descaler (optional for cleaning)

🔧 Step-by-Step Guide to Fixing a Leaky Tap

1️⃣ Turn Off the Water

Shut off water at the mains or under the sink
Flush the tap to drain water from the pipes

⚠️ Don’t skip this step—you’ll flood your sink if you do.

2️⃣ Remove the Tap Handle

Use a screwdriver to remove the handle screw
Pop off any cap covering the screw if needed

3️⃣ Unscrew the Tap Bonnet

Use your wrench to unscrew the metal bonnet
If it’s tight, wrap it in cloth to avoid scratches

4️⃣ Replace the Washer and Jumper Valve

Pull out the old washer
Fit the new 12mm tap washer
Replace jumper valve if worn

Pro Tip: A dab of plumber’s grease will help extend the life of the new washer.

5️⃣ Check and Replace the O-Ring

Leaking at the base?
Slide off the old O-ring and replace with a matching size

6️⃣ Reassemble the Tap

Reattach the bonnet and tighten gently
Screw the handle back in place

7️⃣ Turn the Water Back On

Open the shut-off valve
Test the tap—no leaks? You’ve nailed it! 🎉

🧪 Troubleshooting: Still Leaking?

Double-check that you replaced the washer and O-ring
Clean the valve seat with vinegar or a descaler
Still dripping? The seat may need regrinding or full replacement

Explore our electric hot water systems if your tap troubles extend to pressure or hot water inconsistencies.

📞 When to Call a Plumber

If you’ve replaced the parts and the leak continues, it’s time for a professional inspection. Common issues that require help:

Cracked valve seat
Faulty tap body
Leaking pipework behind the wall
System-wide water pressure problems

Need fast help? Contact JR Gas & Water for expert plumbing and tap repair services

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🔄 How to Prevent Future Tap Leaks

✅ Replace washers and O-rings every 2–5 years
✅ Keep your water pressure balanced
✅ Clean taps monthly to avoid buildup
✅ Fix small drips early before they worsen