Burst Pipe? Here's Exactly What to Do Right Now

Burst Pipe? Here's Exactly What to Do Right Now — a Prime Plumbing & Gasfitting plain-English guide to burst pipe what to do for Melbourne homeowners. Below we cover what works, what doesn't, and when to call a licensed plumber.

Quick answer: A burst pipe needs to be isolated within seconds, not minutes. Step one: shut off the water at the meter — turn the lever 90° clockwise. Step two: drain pressurised water by opening the lowest fixture (usually the laundry trough). Step three: isolate electricity if water has reached any electrical fixtures, switches, or appliances — kill the breaker rather than walking through wet rooms. Step four: move valuables away from where water is reaching. Step five: call a plumber with detail about location and what you can see. While you wait, photograph the damage for insurance, ventilate the area, and don't try to make repairs yourself — emergency clamps from a hardware store can fail under pressure and aren't a substitute for a licensed plumber's repair.

If water is actively spraying or pouring into the house right now, the first 60 seconds matter more than anything else.

Find your water meter shut-off

The water meter is usually at the front of your property, near the boundary, in a small concrete pit with a plastic or metal cover. Lift the cover. The shut-off valve is the lever on the property side of the meter (the side closest to your house).

To shut off:

• Turn the lever 90° clockwise, so it's perpendicular to the pipe
• Water to the entire property is now off

Some older properties have a screwdriver-slot valve rather than a lever. Same principle — rotate clockwise until tight.

If you can't find or operate the meter shut-off:

• Look for an internal shut-off (sometimes inside under the kitchen sink, in the laundry, or near the front door entry of the supply pipe)
• For mains-supply emergencies, your water authority can shut your supply at the network — call them; in Melbourne it's Yarra Valley Water, South East Water, or City West Water depending on suburb

The mains shut-off stops new water arriving. Water already in the system will keep coming out of the burst until the system drains.

Drain the system

Once the mains is off, open the lowest fixture in the house — usually the laundry trough or an outside garden tap. This drains the pressurised water that's still in the pipes faster, reducing how much continues to leak from the burst.

Open multiple low fixtures if you can (laundry tap and outside tap), and leave the affected fixture open too. The system depressurises in 30-60 seconds with multiple drain points.

Once water is stopped and electrics are safe:

1. Move valuables and documents away from where water has reached or might still drip
2. Photograph everything — the burst itself, the surrounding damage, water levels, affected rooms. Insurance will want this.
3. Open windows to start ventilation — wet drywall and timber dries faster with airflow
4. Use towels/buckets to soak up standing water and slow the spread to dry rooms
5. Lift any floor coverings (rugs, paper) that water might wick into

Do these things while you wait for the plumber, not before stopping the water.

• Don't try to clamp the pipe yourself. Hardware-store emergency pipe clamps and self-amalgamating tape can hold momentarily but typically fail under sustained pressure, especially on copper or old galvanised pipes. The clamp gives you a false sense of security and a worse leak when it pops off.
• Don't switch power back on until the affected wiring has been inspected by a sparky.
• Don't pour drain cleaner down anywhere as a "fix" — caustic chemicals don't help burst pipe situations and can cause additional problems.
• Don't flush toilets if the burst is on the supply line to a toilet — the cistern is empty, refilling will pull more water through whatever's broken.
• Don't keep using fixtures elsewhere in the house — until the burst is repaired, the whole supply system is compromised.

Common causes of burst pipes

• Frozen pipe (rare in Melbourne but possible in winter, especially in unheated cavities and under-floor pipes) — water expands as it freezes and splits the pipe
• Old galvanised pipework — corroded internally over decades until the wall thickness fails
• Old copper with internal corrosion or external damage from acid soils or condensation
• Polypipe at compression fittings — joints can fail if not properly assembled or stressed
• Water hammer damage — repeated shockwaves can stress fittings until they fail
• External damage — nail through a pipe in the wall, screw into pipe behind a kitchen cabinet, vehicle running over a buried pipe
• High water pressure — if your incoming pressure is over the AS/NZS 3500.1 limit (500 kPa), every pipe and fitting is stressed beyond design

Service area

Prime Plumbing & Gasfitting handles burst pipe emergencies across Melbourne's eastern, south-eastern, inner-east and bayside suburbs. See all suburbs we service →

Book emergency response

Call 0475 407 670 for active burst pipe emergencies. After-hours, expect honest ETA estimates rather than sales-pitch promises.

• BPC #103414 — Plumbing Industry Commission licensed
• Type A Gasfitter — registered with Energy Safe Victoria
• 4.8 stars on Google
• Compliance Certificate issued where the work requires one

When you call:

• State location — "burst pipe in the laundry wall, water sprayed for 5 minutes before I shut the main"
• State what you've done — "main is off, system drained, electricity isolated"
• State urgency — actively flooding vs. controlled
• Your address with cross-street if helpful
• Your phone number for return calls

The plumber can give you a realistic ETA based on these details. They may also walk you through additional stabilisation steps over the phone while in transit.

For burst pipe response in Melbourne, our burst pipes service covers emergency callout, repair, and pipe replacement.

Once on site, the typical sequence:

1. Confirm the burst location and assess the surrounding damage
2. Isolate the affected section — sometimes possible with sub-isolation valves rather than keeping the whole house off-water
3. Cut out the failed section — copper, polypipe, or galvanised
4. Replace with new pipe and fittings — usually copper or PEX depending on existing pipework and access
5. Pressure test the repaired section before re-pressurising the whole system
6. Restore mains and check for additional leaks (sometimes one burst signals other weak points)
7. Quote any longer-term work — if the burst pipe is part of a wider issue (corroded galvanised, end-of-life copper), additional pipe replacement may be sensible

Total emergency repair time: typically 1-3 hours for a single accessible burst. Concealed bursts (in walls, under slabs, in roof cavities) take longer because the wall/ceiling/floor needs to be opened up.