A Pipe Has Burst: What to Do in the First Ten Minutes

A burst pipe is one of the few plumbing problems where what you do before the plumber arrives changes the size of the bill. Not by a little, either. The difference between water running for five minutes and water running for two hours is usually the difference between a repair and a rebuilt floor.

So this is the order to work in, and the reasoning behind it.

Where do I turn the water off?

Stopping the water comes before finding the leak. You do not need to know where the pipe has failed to shut the whole house down.

Most Auckland houses have two options. The first is the water meter box at your boundary, sometimes still called the toby: a plastic box set into the berm or just inside the front fence, often with a blue lid marked WATER METER. Lift the lid and the valve is the tap-shaped or lever-shaped fitting on the house side of the meter. Turn it clockwise until it stops, or turn a lever so it sits across the pipe rather than along it.

An Auckland water meter box in the berm, with the blue WATER METER lid lifted off

The second is a valve at the house, which in most Auckland homes is at the hot water cylinder. That is where the incoming main comes up and gets valved, so the cylinder cupboard is the first place to look, not the last. It is quicker to reach than the meter box if you know where it is, which is the whole argument for finding it on a dry day rather than a wet one.

Apartments and units work differently. Your shutoff is usually outside your dwelling, in a service cupboard or riser, and often unmarked. That is genuinely hard to work out on your own, so ask the body corporate or building manager to show you and take a photo of it.

If the water is only hot, you can isolate the cylinder on its own. There is a valve on the cold feed going into it, usually with a red or blue handle. That leaves the cold water working while you wait.

Should I turn the power off too?

If water is anywhere near the switchboard, ceiling lights, or power points, yes. Water sitting in a ceiling cavity will find light fittings, and a ceiling that has gone soft can drop without warning.

Turn the power off at the board rather than at the wall switch, and do not stand in water to do it. If the board itself is wet or you are not sure, stay out of the room and call an electrician. That is not us being cautious for the sake of it. It is the one part of a burst pipe that can hurt somebody.

Should I clean it up before the plumber arrives?

Take photos first. Not afterwards.

Photograph the water where it is sitting, the wet ceiling or wall, the damaged flooring, and anything of value that got soaked. Then, when the failed part comes out, keep it. A split flexi hose or a corroded fitting in a bag is the single most useful thing you can hand an assessor.

The reason is how New Zealand policies are written. Most cover the resulting damage (the gib, the flooring, the carpet, the repainting) but not the pipe repair itself. A claim gets slow or declined when nobody can show what failed or how sudden it was. Ten seconds of photos protects the part of the claim that is actually worth money.

After the photos, mop, lift rugs, move furniture off wet carpet and get air moving. Getting things dry early is what limits the damage.

Who do I call first, the plumber or my insurer?

The plumber. Your insurer will ask what failed and whether it has been made safe, and neither answer exists until somebody has looked at it. We can also write the report the claim runs on.

The exception is if the water is on the street side of your meter, or bubbling up in the berm or footpath. That side of the meter belongs to Watercare, and they will come out free. Report it on 09 442 2222. If the wet patch is between the meter and your house, it is your pipe and your plumber.

If your meter is still spinning after you have shut the water off at the meter, the leak is on Watercare’s side. That is a genuinely useful thirty second test.

What if I cannot find the meter box, or the valve will not turn?

Both are common, and neither is your fault. Meter boxes get buried under lawn, covered by driveways, or filled with dirt. Old valves seize solid because nothing has turned them in twenty years.

Do not force a seized valve with a long bar. They snap, and then you have a leak nobody can stop. Call us, or call Watercare, and say the valve at the water meter will not turn. In the meantime, isolate what you can at the house instead, and open the lowest tap in the house to drain pressure out of the system.

If you cannot stop the water at all, keep it away from the switchboard and out of ceiling cavities, and tell us that when you call. It changes how fast we come.

How do I make sure this is easier next time?

Find your water meter box this weekend. Lift the lid, clear the dirt out, check the valve actually turns, and show whoever else lives in the house. Take a photo of it on your phone so you are not hunting in the dark in the rain.

Then do the one minute meter check once a season. Most of the expensive leaks we attend were quietly running for weeks before anybody noticed.

Burst pipe now? Call us. We cover Auckland, and if you are not sure whether it is your side or Watercare’s, ask us on the phone before you call anyone else.

Common questions

How much water actually comes out of a burst pipe?

More than people expect. A mains pressure pipe in an Auckland house typically delivers somewhere around fifteen to twenty litres a minute, so an hour of running water is roughly a thousand litres. That is why shutting the water off at the meter matters more than diagnosing the fault. Even a pinhole that has been running unnoticed for a week can put hundreds of litres into a wall cavity.

Will my insurance cover a burst pipe?

Usually the damage, not the pipe. Most New Zealand policies treat a sudden burst as accidental damage and cover the flooring, gib, carpet and repainting, while the cost of finding and repairing the pipe itself sits with you. Gradual damage from a slow leak is treated very differently and is often excluded, which is why the sudden ones need photographing while the water is still there.

Can I just patch it myself until a plumber comes?

Tape and clamps sometimes hold on a low pressure line for a short time, but they rarely hold on mains pressure, and a patch that lets go overnight causes far more damage than the original burst. Shutting the water off is the safer temporary fix. If you need water in the meantime, isolate the failed section and leave the rest of the house live.

Why did my pipe burst if it has not been cold?

Frost is rarely the cause in Auckland. The common ones here are corrosion in old galvanised or copper pipe, failed plastic pipe such as Dux Quest, a flexi hose reaching the end of its life, movement in the ground pulling a joint apart, and water pressure that is too high for the fittings. High pressure is the one most people never check and the one that quietly shortens the life of everything else.

Do I need to be home when you come?

Not always, if you can arrange access and the water is already off. But if the leak is inside a wall or ceiling and we are likely to need to open something up, it is better if somebody is there to make decisions. We work from the least destructive access first, and that involves choices about how much to open and when.