What to Do When a Pipe Bursts in Your Home

A burst pipe can release dozens of gallons of water into your home every hour, and the damage compounds with every minute the water keeps flowing. The good news is that, unlike a flood from outside, a burst pipe has an off switch — and knowing how to reach it changes everything. This guide walks through exactly what to do, in order: stop the water, cut the power, contain it, document it, and dry it out — then how to keep it from happening again. It’s a hands-on companion to our master guide on what to do when your house floods.

Step 1: Shut off the water — fast

Every second the water runs, the damage grows. Your first move is to stop it at the source.

Find and close the main shut-off valve

The main water shut-off valve controls all the water entering your home. It’s typically located where the supply line comes in — in a basement, crawlspace, garage, or utility area, often near the water heater or on the wall facing the street. Many homes also have a curb-side shut-off near the property line. Turn the valve clockwise to close it.

If the burst is at a specific fixture — under a sink, behind a toilet — there may be a local shut-off valve right there you can close instead, but when in doubt, shut off the main and stop all water flow.

Drain the remaining water

Once the main is off, open the lowest faucets in the house (basement or ground floor) and flush toilets to drain the water still sitting in the pipes. This relieves pressure and reduces how much more leaks from the break.

Step 2: Cut the power — safely

Water and electricity are a deadly combination. If the burst pipe has sent water near outlets, appliances, wiring, or down into a level below, you need to de-energize the affected area.

Shut off power at the breaker for the wet areas — but only if you can reach the panel without standing in or touching water. If reaching it means walking through water, do not. Energized water carries no warning. Leave the power on, get clear, and call your utility or a licensed electrician.

The complete procedure for water, gas, and electricity is in how to shut off water, gas and electricity in an emergency, and the electrical hazards specifically are covered in electrical safety after a flood.

Step 3: Contain the water and protect belongings

With the source stopped and the area safe, slow the spread and rescue what you can:

• Soak it up. Towels, mops, buckets, and a wet/dry vacuum keep water from spreading to dry rooms and seeping into floors below.
• Lift and move belongings. Get furniture, rugs, electronics, and boxes up off the wet floor and out of the room. Put foil or wood blocks under furniture legs that can’t be moved.
• Protect lower floors. Water travels down. If the burst is upstairs, check the rooms and ceilings below for spreading damage.
• Catch active drips in buckets if water is still seeping from the break.

This is also your “duty to mitigate” in action — taking reasonable steps to prevent further damage, which your insurer expects and which strengthens your claim.

Step 4: Document everything for insurance

Before you clean up in earnest, document the damage. A burst pipe is usually a covered event, and your evidence is what gets the claim paid.

• Wide shots of every affected room, capturing the water and the damage.
• Close-ups of damaged belongings, flooring, walls, and the burst pipe itself.
• Model and serial numbers on any damaged appliances or electronics.
• A video walkthrough, narrating what happened and when.
• Receipts for anything you buy to stop the damage — towels, a wet/dry vac, a plumber’s emergency visit.

The full method is in how to document flood damage for insurance. Because a sudden burst pipe is one of the classic covered events, it’s worth understanding exactly where it fits — see does homeowners insurance cover water damage.

Step 5: Call a plumber and your insurer

With the water stopped and the scene documented, make two calls:

• A plumber, to repair the burst and check for related damage in the plumbing system. Keep the invoice for your claim.
• Your insurance company, to open the claim as soon as you reasonably can. Ask what they need, whether an adjuster will visit, and what your deductible is. Log every call.

Step 6: Dry out the structure — beat the mold clock

Here’s the part people underestimate. The visible water is only part of the problem; water wicks into drywall, subfloors, and wall cavities, and mold can begin growing within 24 to 48 hours. Drying out is not optional and it can’t wait.

1. Remove standing water with a wet/dry vacuum — full method in how to remove standing water from your home.
2. Pull out soaked porous materials — carpet padding, cardboard, wet insulation.
3. Move air across every wet surface with fans, sweeping along walls rather than blasting at them.
4. Run dehumidifiers continuously to pull moisture from the air.
5. Open wall cavities if baseboards are wet, so air reaches hidden moisture.

The complete drying strategy — equipment, placement, timeline, and how to verify the structure is truly dry with a moisture meter — is in how to dry out a flooded house. For why the speed matters so much, see how long does it take mold to grow after water damage.

Why pipes burst — and how to prevent the next one

Most burst pipes are the work of freezing. When water freezes it expands, and the pressure inside a pipe between an ice blockage and a closed faucet builds until the pipe ruptures. Pipes in unheated areas — basements, attics, crawlspaces, exterior walls — are the most vulnerable. Other causes include corrosion in aging pipes, excessive water pressure, and physical damage.

To reduce the risk:

• Insulate pipes in unheated spaces with foam pipe sleeves.
• Keep the home heated above freezing — even when you’re away. Don’t set the thermostat too low to save money in a hard freeze.
• Let faucets drip during extreme cold; a trickle of moving water resists freezing and relieves pressure.
• Open cabinet doors under sinks on exterior walls so warm air reaches the pipes.
• Seal drafts near pipes — gaps where cold air gets in.
• Disconnect garden hoses and shut off and drain outdoor spigots before winter.
• Address high water pressure; a pressure regulator can protect the whole system.

And the single most valuable preventive habit costs nothing: know exactly where your main shut-off valve is and make sure it works, before you ever need it. For broader cold-weather guidance, the federal preparedness resources cover preventing and thawing frozen pipes.

What if a frozen pipe hasn’t burst yet?

If you turn on a faucet in cold weather and only a trickle comes out, a pipe may be frozen but not yet burst — and you have a chance to prevent the rupture:

• Keep the faucet open. As the pipe thaws, running water helps melt the ice.
• Apply gentle heat to the frozen section — a hair dryer, a heating pad, or towels soaked in hot water. Never use an open flame.
• Work from the faucet end back toward the frozen area.
• If you can’t reach the frozen section or it won’t thaw, call a plumber before pressure builds and the pipe bursts.

Burst-pipe checklist at a glance

1. Shut off the main water valve (clockwise) immediately.
2. Drain remaining water by opening low faucets.
3. Cut power to wet areas at the breaker — only if safe to reach.
4. Stay out of any water touching electricity.
5. Contain the spread; lift and move belongings.
6. Photograph and video everything before cleaning.
7. Call a plumber and open your insurance claim.
8. Remove standing water and soaked porous materials.
9. Run fans and dehumidifiers; dry within the 24–48 hour window.
10. Afterward, insulate pipes and confirm everyone knows the shut-off valve.

A burst pipe is alarming, but it’s one of the most manageable household emergencies precisely because it has an off switch. Stop the water, stay safe around electricity, dry out thoroughly, and you’ll save far more of your home than the first rush of water might suggest.