What to Do If a Pipe Bursts (Step-by-Step)
A burst pipe dumps up to 750 litres of water per hour. You have about 30 minutes before the damage escalates from manageable to catastrophic. Here is exactly what to do, in order.
Turn off the water at the mains immediately — your shut-off valve is near the water meter at the front of your property. Then open all taps to depressurise the system. If water is near electrical outlets or appliances, cut power at the circuit breaker. Move furniture out of the way, place buckets under drips, and call a licensed plumber. Take photos for insurance before cleaning up. Do not attempt a permanent DIY repair — pipe repair clamps are only temporary.
- • Shut off the main water valve — at the water meter, turn clockwise until it stops.
- • Open all taps to drain remaining water from the pipes and relieve pressure.
- • Kill power at the switchboard if water is near anything electrical.
- • Move furniture, place buckets, and if the ceiling is bulging, poke a small drain hole.
- • Call an emergency plumber — most burst pipe repairs run $250-600.
- • Photograph everything before cleanup for your insurance claim.
6 steps to take right now
These steps are ordered by urgency. Complete each one before moving to the next. Do not skip to step 4 before step 1.
1. Turn off the water at the mains
This is the only step that matters in the first 30 seconds. The main shut-off valve is usually at the front of your property near the water meter — lift the metal or plastic cover marked "WATER" or "METER". Turn the valve clockwise (gate valve) or rotate the lever 90 degrees until perpendicular to the pipe (ball valve). If you have an internal stopcock, it is typically under the kitchen sink, in the laundry, or near the hot water system.
2. Open all taps to drain the system
Once the mains are closed, turn on every tap in the house — hot and cold — to release pressure and drain water from the pipes. This reduces the amount of water that will leak from the burst. Flush toilets to empty cisterns. Collect the water in buckets for reuse if you like, but the priority is depressurising the system fast.
3. Turn off the electricity if water is near appliances
If the burst is near power points, appliances, or switchboards, turn off the electricity at the main circuit breaker. Water and electricity are a lethal combination. If the burst pipe is in a ceiling or wall near wiring, do not enter the room until power is confirmed off.
4. Contain the water damage
Move furniture, rugs, and valuables out of the affected area. Place buckets under drips. If water is pooling on the floor and you have a wet/dry vacuum, use it to extract standing water quickly. Towels and mops work for minor leaks. For ceiling bulges (water pooling above), poke a small hole at the low point with a screwdriver to let water drain into a bucket — this prevents the ceiling from collapsing under the weight.
5. Call a licensed plumber
With the water off and damage contained, call an emergency plumber. Describe the location and severity of the burst. A plumber will locate the exact failure point, determine the cause (frozen pipe, corrosion, accidental damage), and make the repair. Most burst pipe repairs on the Northern Beaches cost $250-600 for a standard fix — far less than the water damage from waiting.
6. Document everything for insurance
Take photos and videos of the burst pipe, water damage, and affected belongings before any cleanup begins. Most home insurance policies cover sudden water damage from burst pipes but require evidence. Keep receipts for any emergency plumber costs, as these may be claimable.
What NOT to do
Do not turn the water back on to "check if it is still leaking" — leave it off until the plumber arrives.
Do not try to solder a copper pipe while water is still in the line — it will not seal.
Do not ignore a small leak assuming it will stop — pipe cracks propagate under pressure.
Do not use duct tape or electrical tape as a repair — they will blow off under pressure.
Do not enter a room where water is contacting power outlets or switchboards.
When to call a plumber
Every burst pipe needs a plumber. The question is whether it can wait until business hours. Call an emergency plumber immediately if: the water cannot be contained with buckets (running actively), water has reached electrical outlets or appliances, the pipe is behind a wall or under a concrete slab and you cannot access it, or if you cannot locate or operate your main shut-off valve. For minor drips that stop completely when the mains are off, a same-day repair during business hours is usually fine.
We offer burst pipe repair across the Northern Beaches with same-day service for urgent cases. Our plumbers carry replacement pipe sections and fittings for copper, PVC, and PEX — most repairs are completed within an hour of arrival.
Northern Beaches considerations
Burst pipes on the Northern Beaches have specific causes. In Mosman and Balgowlah, the most common culprit is ground movement in reactive clay soils. These soils expand when wet and contract in dry weather, shifting underground pipes until joints crack or pipes snap. This is why bursts often follow prolonged dry spells or heavy rain.
In coastal suburbs like Manly and Dee Why, salt spray corrodes exposed copper pipes — especially under houses on sloping blocks where pipes run externally. We see pinhole leaks on copper pipes in coastal areas that are 5-8 years ahead of the same pipes installed 5 km inland.
If you own a holiday home or rental property on the Northern Beaches, arrange for someone to check the property after storms or during extended vacancies. A burst pipe in an unoccupied property can run for days before anyone notices, causing tens of thousands in damage.
Frequently asked questions
What causes pipes to burst on the Northern Beaches?
The most common cause is ground movement in reactive clay soils, which shifts pipes and stresses joints — especially in older homes in Mosman and Balgowlah. In coastal areas like Manly and Dee Why, salt spray accelerates corrosion on exposed copper pipes. Tree roots can also crush or displace clay pipes, causing them to crack and burst under pressure.
Can a burst pipe be repaired temporarily?
Pipe repair clamps and epoxy putty can stop a leak temporarily, but they are not permanent fixes — the weakened section will fail again under pressure. A proper repair requires cutting out the damaged section and replacing it. A plumber will do this properly.
Will my home insurance cover burst pipe damage?
Most Australian home insurance policies cover sudden and accidental water damage from burst pipes, including damage to floors, walls, and belongings. However, they typically exclude gradual damage from long-term leaks or lack of maintenance. Check your policy and document everything.
How do I prevent pipes from bursting?
Know where your shut-off valve is and test it twice a year. In older homes with copper pipes, consider replacing sections that show green corrosion (verdigris). For outdoor pipes, insulation helps. If you are going away in winter, leave the heating on low and open cupboard doors to allow warm air to circulate around pipes.
Burst pipe? We will be there fast.
Emergency burst pipe repair across the Northern Beaches. Same-day service, upfront pricing. Call now or book online.
Related reading
- Water Leaking Through the Ceiling? Do This Now— If the burst pipe is above you, not below you.
- How Much Does an Emergency Plumber Cost?— What you will pay and how to avoid being overcharged.