Pipe Burst? Here’s Exactly What to Do First

A Burst Pipe Is an Emergency — But Panic Makes It Worse

Water is pouring where it shouldn’t be. Your heart is pounding. Here’s the good news: the next ten minutes matter more than the next ten hours, and the steps are simple. Follow them in order, and you’ll limit the damage dramatically — most burst-pipe damage comes not from the burst itself, but from the water running too long before someone acts.

Take a breath. Work the list. Then get help.

Once the water is stopped and the situation is stable: get a free quote — describe the emergency once and we’ll connect you with licensed local plumbers in your area who handle emergency repairs.

Step 1: Shut Off the Main Water Valve

This is the single most important step. Every minute of delay is more water in your walls, floors, and belongings.

Where to find it:

• Most homes: where the main water line enters the house — often in the basement, crawlspace, garage, or utility room, on the wall facing the street.
• Warm climates / slab foundations: often outside, near the water meter by the curb or sidewalk, in a covered box in the ground.
• Apartments and condos: there may be a unit shutoff near your water heater, plus a building main controlled by management. Know both.

The valve is usually a round wheel (gate valve — turn clockwise to close) or a lever (ball valve — turn it a quarter-turn so it’s perpendicular to the pipe). Turn it until the water stops. Then open a faucet at the lowest point in the house to confirm the flow has actually stopped.

Do this today, before you ever need it: go find your main shutoff right now, make sure it actually turns (old gate valves seize up from years of disuse), and show every adult in the household where it is. A valve nobody can find might as well not exist.

Step 2: Turn Off Your Water Heater

Once the main is off, your water heater is still full of hot water and still heating it. With no incoming water pressure, an electric heater’s elements can burn out, and a gas heater can overheat — both expensive, both avoidable.

• Electric water heater: flip the dedicated breaker in your electrical panel to OFF.
• Gas water heater: turn the gas control valve to the PILOT or OFF position (check your unit’s label — settings vary slightly by model).

This takes thirty seconds and protects a $1,200–$3,500 appliance. Don’t skip it.

Step 3: Drain the Remaining Water

Shutting the main stops new water from entering, but the pipes are still full. Open faucets to drain the system and relieve pressure:

1. Open the cold water faucets, starting at the lowest floor and working up.
2. Flush toilets to empty tanks and bowls.
3. Open the hot water faucets to drain the hot side too.

This reduces the water still available to leak from the burst section and lowers pressure throughout the system. Leave the faucets open — if temperatures are still below freezing, moving (or empty) pipes are far less likely to burst again.

Step 4: Kill Power Near the Water

Water and electricity are a dangerous combination. If water is near outlets, appliances, your electrical panel, or light fixtures:

• Turn off the breakers for the affected areas at your electrical panel.
• Do not touch any electrical device, outlet, or switch that’s wet or standing in water.
• If water is actively entering the electrical panel itself, leave the house and call the fire department — that is beyond a plumbing emergency.

If you’re ever unsure whether it’s safe to touch something, treat it as unsafe. No pipe is worth an electrocution risk.

Step 5: Document Everything for Insurance

Before you start moving things and cleaning up, document the damage. Your future insurance claim depends on it.

• Photograph and video the burst location, the water flow (if still active), and every affected room, wall, floor, and belonging. More is better — you can’t go back and photograph it later.
• Don’t throw anything away yet. Damaged items are evidence. Move them aside, but keep them until the adjuster has seen them (or your insurer says otherwise).
• Save receipts for everything: the plumber, emergency mitigation, hotel if you can’t stay in the home, replacement essentials.
• Call your insurer promptly — most policies require timely reporting. Ask specifically what’s covered: sudden pipe bursts are typically covered; long-term leaks and resulting mold often are not. The distinction matters, so report early.

Step 6: Get an Emergency Plumber on the Way

With the water stopped and the scene documented, it’s time for professional repair. A burst pipe needs more than a patch — the damaged section must be cut out and replaced, the system pressure-tested, and (in freezing weather) the cause addressed so it doesn’t happen again next week.

When you call, have this information ready — it gets you an accurate quote and the right technician:

• Where the burst is (exposed basement pipe? inside a wall? under the slab?)
• What kind of pipe (copper, PEX, CPVC, galvanized — check an exposed section if you can)
• Whether the main is shut off and the system is drained (you’ve already done this — good)
• Whether there’s active water damage to floors, walls, or ceilings

Expect emergency pricing. After-hours burst pipe repairs typically run 50–100% above standard rates — a straightforward exposed-pipe repair might be $300–$600 on a weekday and $500–$1,000+ at 2 AM. That’s the market, not gouging. But “emergency” doesn’t mean “blank check”: get the price in writing before work starts, even at midnight.

America’s Service Plumber is a free matching service. Describe your emergency once, and we’ll connect you with licensed local plumbers in your area who do emergency work — so you’re comparing real options instead of calling down a list in a panic at 2 AM.

Get emergency plumbing help — free, fast, and no obligation.

What NOT to Do

• Don’t try to thaw a frozen pipe with an open flame. Blowtorches and frozen pipes cause house fires every winter. A hair dryer or warm towels are the safe tools — or leave it to a professional.
• Don’t ignore a small leak “until morning.” A pinhole leak at full pressure can put gallons per hour into your wall cavity. Small leaks become big damage quietly.
• Don’t use chemical drain cleaners on a burst or frozen pipe. They won’t help and can make the plumber’s job more hazardous.
• Don’t turn the water back on to “test” the repair yourself unless the plumber tells you to. Re-pressurizing a compromised system can blow the temporary fix and flood the area again.

After the Repair: Preventing the Next Burst

Once the crisis is over, a few inexpensive measures make a repeat far less likely:

• Insulate exposed pipes in unheated areas — basements, crawlspaces, attics, garages. Foam pipe sleeves cost a few dollars and take minutes to install.
• Seal air leaks near pipes. That blast of cold air through a dryer vent or unsealed rim joist is what freezes the pipe three feet away.
• Keep the heat on — at least 55°F — even when you’re away. The heating bill is always cheaper than the flood.
• Let faucets drip during extreme cold snaps. Moving water is much harder to freeze.
• Know your pipes’ age and material. Galvanized steel pipes from the mid-20th century corrode from the inside and burst without warning. If your home still has them, a repipe quote is worth getting before the emergency.
• Consider an automatic shutoff valve. Smart water shutoff devices ($500–$1,000 installed) detect abnormal flow and close the main automatically — they stop the flood while you’re at work or on vacation.

The cheapest burst pipe is the one that never happens. But if it does, you now know exactly what to do — and the most important step, finding that main shutoff, is one you can do today, in two minutes, for free.