When a pipe bursts, shut off your water at the main valve immediately to stop the flooding, then open faucets to drain the remaining water from the lines so the leak slows. Cut power to the area at the breaker if water is near outlets or appliances (only if you can do so safely), move belongings out of the water, and call a plumber for emergency repair. If the burst was caused by freezing, leave faucets slightly open as the pipe thaws.
A burst pipe releases a lot of water fast, so the priority is stopping the flow. Locate your main water shutoff — usually where the water line enters the building, in a basement or utility area — and close it. Knowing where this valve is ahead of time turns a panic into a quick fix.
After the main is off, open your faucets to drain the water still sitting in the pipes; this relieves pressure and slows the leak from the burst section. If water has reached outlets, appliances, or the electrical panel, shut off power to that area at the breaker — but only if you can do it without standing in water.
Then limit the damage while you wait for the plumber: move furniture and valuables away from the water, mop up or use towels and buckets, and take photos for your insurance. Water from a burst pipe travels into walls, ceilings, and floors below, so the faster it is controlled, the less hidden damage you face.
Freezing is a common NYC cause in winter, when water expands and ruptures the pipe. If that is the cause, keeping the affected faucets slightly open as the system thaws helps relieve pressure. For the actual repair, a plumber will fix or replace the burst section — and may flag whether more pipes are at risk.
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How do I stop a burst pipe from flooding?
Shut off the water at your main valve immediately, then open faucets to drain the remaining water from the pipes so the leak slows.
Why do pipes burst in NYC winters?
Water expands as it freezes, and the pressure ruptures the pipe. Keeping heat on and letting faucets drip during deep cold helps prevent it.
Should I cut the power after a burst pipe?
If water is near outlets, appliances, or the electrical panel, shut off power to that area at the breaker — but only if you can do so without standing in water.