What to Do When a Pipe Bursts: The First 10 Minutes

When a pipe bursts, shut off your home’s main water valve first, kill the power to any flooded area, then open the lowest faucets to drain the lines. A half-inch supply line can release 4 to 12 gallons a minute, so the first ten minutes decide how bad the damage gets. Stop the water, protect yourself from electrical shock, then call a plumber and your insurer. Related: sump pump costs.

The first 10 minutes: your burst pipe checklist

Work these steps in order. The goal is simple: cut the water, remove the electrical hazard, and drain the pressure out of the system before you worry about cleanup. Every minute the main stays open adds gallons to the floor.

1. Shut off the main water valve. This stops water from feeding the break. The valve is usually where the line enters the home: basement, crawlspace, garage, or a ground box near the street. Turn it fully clockwise, or a quarter turn on a lever valve.
2. Kill the power if water is near electrical. If water has reached outlets, appliances, or the panel, switch off the breaker, but only if you can reach it without standing in water. When in doubt, stay out and call the utility.
3. Open faucets to drain the lines. Start at the highest floor and work down, then flush every toilet. This pulls the remaining water and pressure out of the pipes so the break stops dripping faster.
4. Shut off the water heater. With the cold supply off, shut off the water heater to pilot or off so it does not run dry and overheat. Then open hot taps top to bottom to drain them.
5. Move valuables and contain the water. Lift furniture, electronics, and boxes off wet flooring. Put down towels or a wet/dry vacuum to keep water from spreading into new rooms.
6. Photograph everything before you clean up. Shoot wide and close photos and a video of the source, standing water, and every damaged item. This is your insurance evidence.
7. Call a licensed plumber, then your insurer. Get the pipe fixed and a written cause statement first, then file your claim the same day if you can.

How fast a burst pipe floods your home

A burst pipe is a volume problem, and the numbers escalate quickly. Residential supply lines commonly flow 4 to 12 gallons per minute, and a fully open half-inch break can push 30 to 50 gallons per minute. The table below shows what an 8-gallon-per-minute leak, a realistic middle figure, puts on your floor over time.

At the high end, a wide-open line hitting 50 gallons per minute can move more than 10,000 gallons in a few hours. That gap between 8 and 50 gallons per minute is exactly why locating your main valve today, before an emergency, is the single most useful thing you can do.

Find and shut off your water fast

The main shutoff is the one control that stops the flood, so know its location and type before you need it. Most homes have two options: the interior main where the line enters the house, and the street-side curb stop in a ground box. Match your valve to the table so you know which way it turns.

If the burst is at a single fixture, the local fixture stop may be enough to isolate it without cutting water to the whole house. For anything larger, or if you cannot tell where the water is coming from, go straight to the main. If the main valve is seized and will not turn, that is an emergency in itself, and you should call a licensed emergency plumber right away.

Why pipes burst and how to prevent it

Most burst pipes trace to one of a few causes: frozen water expanding inside the line, corrosion in old galvanized or copper pipe, water pressure above 80 psi, or physical damage. Prevention is cheaper than restoration, and a few habits carry most of the protection.

• Insulate exposed pipe. Foam sleeves on lines in attics, crawlspaces, garages, and exterior walls cut the freeze risk that causes most winter bursts.
• Hold heat in a cold snap. Keep the house at 55 degrees or warmer when away in winter, open cabinet doors under sinks, and let a faucet drip during hard freezes.
• Check your water pressure. A $10 gauge on a hose bib tells you your psi. Above 80, install or service a pressure-reducing valve to protect the whole system.
• Watch for early warnings. Banging pipes, rusty water, and a jump in your water bill with no change in use often signal a weak spot before it fails.
• Add leak protection. A smart water shutoff or simple battery leak alarms near the heater and washer catch failures early, and many insurers offer a discount for them.

Burst pipe insurance: what is covered and how to file

Most standard homeowners policies cover sudden and accidental water damage from a burst pipe, meaning the cost to dry out, repair, and replace damaged walls, floors, and belongings. The repair of the pipe itself is often excluded, and damage the insurer decides was gradual or caused by neglect can be denied. Move quickly and document everything.

1. Document before cleanup. Photos and video of the source, the standing water, and every damaged item are your evidence. Do not throw anything out until it is recorded.
2. Stop further damage. Insurers expect you to mitigate. Extract water, run fans, and keep receipts for any emergency work, since reasonable mitigation costs are often reimbursable.
3. Get a plumber’s written statement. A note confirming the failure was sudden supports the claim if the adjuster questions the cause. This is where the cause-of-loss language matters most.
4. File promptly. Report the loss to your insurer the same day if possible, since most policies require prompt notice. Ask about your deductible and your coverage limits before work begins.
5. Track every cost. Keep a running file of receipts, contractor estimates, and conversations. Detailed records shorten the claim and reduce disputes.

A burst pipe repair itself is usually modest next to the water damage, often $150 to $600 for an accessible section, more when a plumber has to open a wall or work in a slab. The restoration is where the real money goes, which is why stopping the water in the first minutes protects both your home and your claim.

Frequently asked questions

Is a burst pipe covered by homeowners insurance?

Most standard homeowners policies cover sudden and accidental water damage from a burst pipe, including the cleanup and repairs to walls, floors, and belongings. The pipe repair itself is often not covered. Damage tied to neglect, such as an unheated home or a leak you left for weeks, is frequently denied. Coverage varies by policy and state.

Should I turn off the electricity if a pipe bursts?

Yes, if water is near outlets, appliances, or the panel, or if it has reached the floor of a room with electronics. Shut the power at the breaker, but only if you can reach the panel without standing in water. If the panel itself is wet or you are unsure, stay out and call an electrician or the utility.

How much water does a burst pipe release?

A half-inch supply line commonly releases 4 to 12 gallons per minute, and a wide-open break can hit 30 to 50 gallons per minute. At just 8 gallons per minute, a burst pipe dumps roughly 480 gallons in an hour. That is why shutting the main in the first minutes matters more than any other step.

Can I fix a burst pipe myself?

You can stop the flow by shutting the main and draining the lines, and a pipe clamp or repair sleeve can hold a small split for a short time. A permanent fix usually means cutting out the failed section and installing new pipe, which most homeowners should leave to a licensed plumber so the repair passes code and your insurance claim holds up.

Who do I call first, a plumber or my insurance company?

Call the plumber first once the water is off. Stopping the damage and getting a written cause-of-loss statement protects both your home and your claim. Contact your insurer soon after, ideally the same day, since most policies require prompt notice. Document everything with photos and video before cleanup begins.

What are the signs a pipe is about to burst?

Watch for banging or knocking in the walls, a sudden drop in water pressure, discolored or spitting water, frost on exposed pipe in winter, and damp spots or stains on walls and ceilings. A jump in your water bill with no change in use is another common tell. Exposed pipe in unheated space is the highest freeze risk.

Last reviewed: August 2026.