Water’s coming through the ceiling. A pipe under the sink is spraying. The toilet won’t stop overflowing. When it’s happening in front of you, it’s hard to think straight. So here’s the plan, in the order that actually matters, so you can stop the damage before anyone turns up in the driveway.
TL;DR: the first five minutes of a plumbing emergency
- Stop the water. Use the isolation valve under the fixture, or the main tap at your water meter out the front.
- Kill the power to the area if water is anywhere near power points, lights or appliances.
- Drain the pressure. Open a couple of cold taps to clear water still sitting in the pipes.
- Contain it. Towels, buckets, move anything valuable out of the wet zone.
- Take photos for insurance before you clean up.
- Call a licensed plumber. Tell them what’s happened and what you’ve already done.
If you can smell gas, that’s a different situation. Skip to the gas section below and get everyone out first.
Step 1: Stop the water at the source
This is the one that saves you money. Every minute water keeps running, it soaks further into floors, walls and ceilings.
Start with the closest tap you can shut off:
- Under a sink or basin: there’s usually a small tap on the wall behind the vanity or cupboard. Turn it clockwise until it stops.
- Behind a toilet: a little chrome tap on the wall near the cistern. Same thing, turn it clockwise.
- A washing machine: two taps behind the machine or in the laundry cupboard.
These isolation valves let you kill the water to one fixture without shutting off the whole house. Handy if it’s a burst flexi hose under the kitchen sink, which is one of the most common causes of water damage in Aussie homes.
If you can’t find a local tap, or the leak is somewhere you can’t see, go to the main shut-off.
Where the main water tap is in most Sydney homes
Head to your water meter. In most homes around Kogarah, Hurstville, Rockdale and the wider St George area it’s near the front boundary, in a small plastic or metal box set into the ground. Lift the lid and you’ll see the meter and a valve next to it. Turn that valve clockwise until it stops.
In a unit or apartment, the shut-off is often inside a cupboard near the kitchen or laundry, or in a shared service area. If you’re not sure, your building manager or strata should know.
One thing worth doing on a calm day: find your main tap now, before you ever need it. When water’s spraying at 2am, you don’t want to be hunting for it with a torch.
If the valve is stuck, don’t force it. Cranking a seized valve with pliers can snap it and make things worse. Leave it and call for help.
Step 2: Switch off power near the water
Water and electricity together is genuinely dangerous. If a leak is anywhere near power points, downlights, wiring or appliances, turn the power off at the switchboard before you go near the wet area.
Your switchboard is usually in the hallway, garage, or outside by the meter box. Flip the main switch, or the breaker for the affected room if you know which one it is. Don’t touch any switch or appliance while you’re standing in water. If there’s any doubt, stay out and wait for a professional.
Step 3: Drain the pressure out of the pipes
Once the water’s off, open a couple of cold taps somewhere in the house and flush a toilet once. This clears the water still sitting in the pipes under pressure, which slows a leak inside a wall or ceiling right down.
Still hear water running after the main’s off? It might be your hot water system emptying. Most units have a cold water inlet tap on the pipe feeding into them. Turn that off too.
Step 4: Contain the mess and protect your stuff
Now limit how far the water spreads:
- Old towels and buckets under any active drips.
- Mop or wet-vac standing water off timber and tiled floors fast. Timber warps the longer it sits.
- Move electronics, paperwork and anything valuable well clear of the wet area. Water travels through carpet underlay further than you’d expect.
- Open windows for airflow. Damp rooms can start growing mould within a day or two.
Bulging ceiling? If a ceiling is sagging with the weight of trapped water, that water needs somewhere to go before the whole sheet lets go. A controlled release into a bucket beats a collapse, but if you’re not confident, keep everyone out of the room and wait for the plumber.
Step 5: Take photos before you clean up
Quick, but important. Photograph the source of the leak, how far the water’s spread, and any damage to floors, walls, ceilings and belongings. Most home insurance covers sudden, accidental water damage like a burst pipe, and your photos show it was sudden rather than a slow leak left for months. If you’re renting, let your property manager know straight away.
What actually counts as a plumbing emergency?
Not everything needs an after-hours call-out. Knowing the difference helps you decide whether to ring now or wait until morning.
Call a plumber now:
- Burst pipe with water you can’t stop
- Sewage backing up into the house (that’s a health risk)
- No water to the whole property
- A hot water system flooding or leaking badly
- A blocked drain sending water into living areas
Usually fine until morning if you can isolate it with a valve:
- A single dripping tap
- A slow-draining sink or shower that’s still draining
- A running toilet you’ve shut off at the wall tap
- A minor under-sink leak caught in a bucket
The simple test: if water’s flowing where it shouldn’t and you can’t stop it, or sewage or gas is involved, treat it as an emergency. If you can shut it off and live without that one fixture overnight, it can wait.
Gas smell? Handle it differently
A gas leak is not a water problem and the steps above don’t apply. Get everyone out of the house. Don’t flick light switches, don’t use appliances, and don’t use your phone inside. If it’s safe and you can reach it, turn the gas off at the meter outside. Call 000 if anyone’s in danger, and get a licensed gas fitter out once it’s safe. Never try to trace or fix a gas issue yourself.
When it’s a Sydney Water problem, not yours
You’re responsible for the pipes from the meter into your home. Sydney Water looks after the main in the street and the connection up to the meter. If water’s gushing from the road, a footpath, or the street side of your meter, that’s one for Sydney Water’s 24-hour faults and emergencies line. You can find it on the Sydney Water website.
What to have ready when you call a plumber
A good emergency plumber will get more done, faster, if you can tell them a few things upfront:
- Your address and suburb
- What’s happening (burst pipe, sewage, no hot water)
- What you’ve already done (water off, power off)
- Whether it’s getting worse or you’ve got it contained
While you wait, clear a path to the problem area, unlock side gates so they can reach the meter, and pop the dog in another room. If it’s dark, turn the outside lights on.
The honest takeaway
Most of the damage in a plumbing emergency happens in the first few minutes, before anyone arrives. Stop the water, keep clear of anything electrical, contain the spread, and snap a few photos. Do that and you’ve done the important part.
If you’re in the St George area or the Sutherland Shire and you’ve got water where it shouldn’t be, we run 24/7 emergency callouts with licensed plumbers and an honest ETA. Get the water off, then give us a call and tell us what’s gone wrong.