A burst pipe can dump gallons of water into your home in minutes, and the first ten minutes matter more than anything a plumber does later. Knowing exactly where your shutoff valve is and what to do next can mean the difference between a damp carpet and a ruined subfloor. Here's the order of operations to follow when a pipe bursts in your house, from the moment you hear that hiss or spot the puddle to the point a professional takes over.

Shut Off the Water Immediately

Every second the water runs, the damage spreads. Your first move is to stop the flow at the source, not to grab towels.

  1. Find the main shutoff valve. In most homes this is where the water line enters the house: near the water heater, in a basement, in a crawlspace access, or in a utility closet. In warmer climates it's often outside near the foundation or in a below-grade box near the curb.
  2. Turn it clockwise until it stops. A gate valve (round handle) may take several full turns. A ball valve (lever handle) only needs a quarter turn to fully close.
  3. If you can't find or reach the main valve fast enough, close the fixture's local shutoff. Under sinks, behind toilets, and behind washing machines you'll usually find small oval or lever valves that isolate just that line. This won't help with a burst in a wall or ceiling, but it's faster for a burst supply hose.
  4. If the valve is stuck or missing, shut off water at the meter. Most water meters have a shutoff valve or a meter key nearby; some municipalities require a special tool that many homeowners keep by the meter box or in a junk drawer for exactly this reason.

[!safety] If the burst pipe is anywhere near an electrical panel, outlet, light fixture, or any powered appliance, do not step into standing water to reach a valve. Shut off power to the affected area at the breaker panel first, or call a licensed electrician or the fire department if you're unsure it's safe. Water and live electrical circuits are a serious shock and fire hazard.

Kill the Power to Affected Circuits

Once the water is off, go to your breaker panel and switch off the circuits serving any room with water intrusion, especially if the leak is above outlets, switches, or ceiling fixtures. If the panel itself is wet or you have to stand in water to reach it, don't touch it. Call an electrician or your utility company instead.

Drain the Remaining Water in the Pipes

Even after the main valve is closed, the pipes still hold water that will keep draining out under gravity.

  • Open the lowest faucet in the house (often a basement or outdoor spigot) to let residual water drain out rather than continuing to leak from the break.
  • If the burst is on a hot water line, also open a hot water tap to relieve pressure, and consider shutting off the water heater's power or gas supply so it doesn't keep heating water it can't circulate.
  • Flush toilets once each to clear the tanks, since gravity-fed tank water can still add to a leak downstream of the shutoff in rare configurations.

[!safety] If the burst pipe is a gas line rather than a water line, evacuate immediately, do not flip any light switches or create sparks, and call your gas utility or 911 from outside the house. Do not attempt to shut off a gas line yourself unless you have been trained to do so and know exactly which valve controls it.

Contain and Mitigate the Damage

With water and (if needed) power off, focus on limiting what the water has already touched.

  • Move furniture, rugs, electronics, and boxes off the wet floor right away. Standing water wicks into fabric and cardboard within minutes.
  • Mop up or use a wet/dry shop vacuum on standing water as soon as it's safe. Even a few hours of standing water can start softening drywall and warping wood flooring.
  • Open windows and set up fans or a dehumidifier to start drying the area. Mold can begin developing within 24 to 48 hours in a warm, damp space, so speed matters more than perfection here.
  • If water has soaked insulation, drywall, or carpet padding, expect that those materials may need to be cut out and replaced rather than dried in place. Water-damaged drywall below the flood line especially tends to lose structural integrity.
  • Photograph everything (walls, floors, damaged items, the pipe itself) before you start cleanup. This documentation matters for insurance claims and for showing a plumber or contractor exactly what happened.

Call a Licensed Plumber

Once the immediate emergency is under control, call a licensed plumber to assess and repair the actual break. A burst pipe is rarely an isolated fluke: it's often a symptom of freezing, corrosion, old galvanized piping, or excessive water pressure elsewhere in the system, and a plumber can check for related weak points you can't see.

[!safety] Repairing a burst pipe inside a wall, ceiling, or slab often involves cutting into finished surfaces and working with soldered or pressurized fittings. Unless you have direct plumbing experience, this is a job to leave to a licensed professional rather than attempting a permanent fix yourself.

If you can't get a plumber out immediately, a temporary pipe repair clamp or a section of rubber and hose-clamp patch (available among the recommendations below) can slow a leak for a few hours, but treat it as a stopgap, not a fix. Keep the main valve closed except for brief tests, since a patch is unlikely to hold under full house pressure for long.

[!region] Some municipalities require permits or licensed-plumber sign-off for repairs to main water lines or repiping work, particularly if the fix involves opening a slab foundation. Check with your local building department before undertaking anything beyond a temporary patch.

Call Your Insurance Company

Most homeowners insurance policies cover sudden and accidental water damage from a burst pipe, though coverage details vary by policy and insurer. Call your agent as soon as the immediate crisis is handled, before you throw out damaged materials, and ask whether they want photos, a written statement, or an in-person adjuster visit first. Keep receipts for any emergency mitigation work, such as a restoration company or a rented dehumidifier, since many policies reimburse those costs.

Prevent the Next One

Once repairs are done, take a few steps to reduce the odds of a repeat:

  • Insulate exposed pipes in unheated spaces like crawlspaces, attics, and garages, since freezing is one of the most common causes of bursts.
  • Have your water pressure checked; pressure consistently above roughly 80 psi (a plumber can measure this) stresses pipes and fittings over time.
  • Know where your main shutoff valve is before the next emergency, and make sure every adult in the house does too. Consider labeling it clearly.

FAQ

How fast can water damage set in after a pipe bursts? Standing water can start soaking into drywall, wood flooring, and carpet padding within a few hours, and mold growth can begin within 24 to 48 hours in a warm, humid space. Speed in shutting off water and starting cleanup matters more than doing everything perfectly.

What if I can't find my main water shutoff valve? Check near the water heater, in a basement or crawlspace, in a utility closet, or outside near the foundation. If you truly can't locate it during an emergency, shut off water at the street-side meter using a meter key, or close the local shutoff valve at the specific fixture if the burst is at a sink, toilet, or washing machine hose.

Should I try to patch the pipe myself before the plumber arrives? A temporary clamp or rubber-and-hose-clamp patch can buy you a little time, but it's not a permanent fix and can fail under full pressure. Keep the main valve closed except for brief tests and treat any DIY patch as a stopgap until a licensed plumber makes the real repair.

Will homeowners insurance cover a burst pipe? Most policies cover sudden, accidental water damage from a burst pipe, though coverage and exclusions vary by insurer and by the cause of the break (for example, damage from long-term neglect may be excluded). Contact your insurance company as soon as the situation is stable and before discarding damaged materials.

Is it safe to stay in the house after a pipe bursts? In most cases yes, once the water and any affected electrical circuits are shut off. The main exceptions are a burst near live electrical wiring or panels, a gas line rupture, or significant structural water damage. In those cases, evacuate and call the appropriate utility or a licensed professional immediately.