Burst Pipe: Emergency Steps to Limit Damage
A burst pipe can dump hundreds of litres of water into your home fast, and every minute counts. The single most important thing to know is how to turn off your water at the mains, so if you only read one line of this article, make it this: locate your main water shut-off valve now, before you ever need it.
Here's a clear, calm sequence to follow if a pipe bursts, plus how to keep everyone safe around water and electricity while you wait for a plumber.
Step 1: Turn off the water at the mains
Your main shut-off valve (also called the stop tap or stopcock) controls all the water coming into your home. Shutting it off stops the flow at the source and is the fastest way to limit damage.
In most WA homes the mains stop tap is at the water meter, usually near the front boundary of the property, often in a green box at ground level. There may also be an internal isolation valve. Turn the tap clockwise (right) to close it. If you've never located yours, do it today and show everyone in the household, because searching for it mid-flood costs you precious time.
If the burst is on a single appliance or fixture, such as under a sink or at the toilet, you may be able to close the isolation valve just for that fixture instead. But when in doubt, shut off the whole mains.
Step 2: Switch off electricity if water is near wiring
Water and electricity are a dangerous mix. If water is leaking near power points, light fittings, your switchboard, or any electrical appliance, or if it's coming through the ceiling, switch off the power at the main switch on your electrical board. Do not touch electrical switches or appliances with wet hands or while standing in water.
If you have any doubt about whether it's safe, stay clear of the affected area and call for help. Your safety comes first, well ahead of protecting the carpet.
Step 3: Turn off the hot water system
If the burst is on the hot water side, or you've shut off the mains and a storage hot water system is involved, turn the system off. For an electric unit, switch it off at the power point or isolation switch. For a gas unit, turn off the gas isolation valve. This prevents the system heating an empty or low tank and causing further problems. If your hot water system itself has failed, our hot water systems team can help.
Step 4: Drain the remaining water
Once the mains is off, open the cold taps at the lowest points in the house (often an outside tap or laundry) to drain the water sitting in the pipes. This relieves pressure and reduces how much water can still escape from the burst. Flush toilets to clear the cisterns too.
Step 5: Contain and limit the damage
- Place buckets, towels or a mop under active drips to catch water
- Move furniture, electronics, rugs and valuables away from the wet area
- Lift the corners of carpets if you can, to reduce soaking
- Soak up standing water quickly to limit it spreading into walls and floors
- Take photos of the damage for your insurance claim before you clean up
Acting quickly here makes a real difference to how much needs repairing later, and to your insurance outcome.
Step 6: Call a licensed plumber
A burst pipe needs to be repaired by a licensed plumber, both to fix it properly and to keep the work compliant. Don't turn the mains back on until the pipe is repaired or safely isolated. Our burst and leaking pipes service handles emergency repairs, and for out-of-hours situations our emergency plumbing team can attend urgently.
What causes pipes to burst?
| Cause | What's happening |
|---|---|
| Corrosion and age | Older metal pipes weaken and eventually fail at thin spots |
| High water pressure | Excessive mains pressure stresses joints and pipe walls over time |
| Ground movement | Shifting soil, especially in clay-heavy areas, cracks buried pipes |
| Physical damage | Nails, screws or garden digging puncture concealed pipes |
| Tree roots | Roots crack and split underground lines as they grow |
Many bursts give warning signs first, such as damp patches, a drop in water pressure, or an unexplained jump in your water bill. Catching a small leak early with water leak detection can prevent a full burst down the track.
After the emergency: drying out and repairs
Once the leak is stopped and a plumber has repaired the pipe, the focus shifts to drying out and preventing secondary damage like mould. Water that soaks into walls, skirting boards and under flooring can cause problems weeks later if it isn't dried properly.
- Get air moving through the affected rooms with fans and open windows, and use a dehumidifier if you have one.
- Lift or pull back wet carpet and underlay so the slab or floor beneath can dry.
- Keep documenting the damage with photos for your insurer as things progress.
- Watch for musty smells or discolouration on walls and ceilings, which signal trapped moisture.
For significant water damage, your insurer may arrange professional drying and restoration. Ask before you rip anything out, so you don't accidentally affect your claim.
Be ready before it happens
The households that cope best with a burst pipe are the ones who prepared in advance. Take five minutes today to find your main shut-off valve, make sure it turns freely, and show everyone at home where it is. It's also worth knowing where your gas and electrical isolation switches are, and keeping the number of a licensed local plumber handy so you're not searching for help while water pours in. That small bit of prep can save you thousands in water damage.
Dealing with a burst pipe right now? Shut off your mains, stay clear of any electrical hazards, and call our licensed Canning Vale plumbers for an urgent repair.
Frequently asked questions
Where is my water mains shut-off valve?
In most WA homes it's at the water meter near the front boundary, often in a green ground-level box, and sometimes there's an internal isolation valve too. Turn it clockwise to close. Locate yours before an emergency so you're not searching during a flood.
Should I turn off the electricity when a pipe bursts?
Yes, if water is anywhere near power points, light fittings, the switchboard, appliances, or coming through the ceiling. Switch off the main power switch, and never touch electrical fittings with wet hands or while standing in water.
Can I repair a burst pipe myself?
You can slow the damage by shutting off the mains and containing the water, but the actual repair must be done by a licensed plumber in WA to be safe and compliant. Don't restore mains water until the pipe is properly repaired or isolated.
Will my insurance cover burst pipe damage?
Many home insurance policies cover sudden water damage from a burst pipe, though it depends on your policy. Take photos of the damage before cleaning up, and check your product disclosure statement or ask your insurer about your specific cover.