I can't find the shutoff valve — what do I do?

Contact your building superintendent or management immediately; they should know the location of the building's main shutoff even if you don't know your unit's. If you can't reach anyone and water is actively flooding the space, call an emergency plumber and describe the situation — some emergency services can talk you through locating a shutoff over the phone while they're en route.

Is a burst pipe covered by renters or building insurance?

Coverage depends on your specific policy and, in a rental, on your lease and the building's insurance — this is a question for your insurance provider or landlord, not something we can answer generally. Documenting the damage with photos as soon as it's safe to do so is useful regardless of which policy ends up covering it.

How long can water damage sit before it becomes a bigger problem?

Restoration-industry guidance treats roughly 24 to 48 hours of sustained wetness in building materials as the window where mold growth becomes a realistic risk. A burst pipe that's shut off and repaired quickly, with wet materials dried promptly, is far less likely to progress to that point than one left unaddressed overnight.

Should I try to fix a burst pipe myself?

Shutting off the water is something most people can safely do themselves if they know where the valve is. Diagnosing and repairing the actual failed pipe or fitting is a job for a licensed plumber — attempting a repair without the right parts or technique risks reopening the leak once water pressure is restored.

Burst Pipe Emergency: What to Do First in an NYC Apartment

The first sixty seconds matter more than anything else

A burst pipe is a race against how much water gets into the structure before someone stops it. The single most important action — more important than calling anyone, more important than moving belongings — is shutting off the water at the nearest valve. Every extra minute of uncontrolled flow adds directly to the water damage that has to be dried out or repaired afterward.

Step by step

Shut off the water first. Look for the fixture’s own shutoff valve — typically under a sink or behind a toilet for a localised burst. If the source isn’t a single fixture, or the fixture shutoff doesn’t stop the flow, find your apartment’s main shutoff. If you don’t know where that is, or it’s not working, contact your building superintendent or management immediately — they should be able to shut off the building main.

Don’t touch water near electricity. If water is reaching an outlet, a light fixture, or anywhere near an electrical panel, stay clear. Cutting power at the breaker for that area is worth doing only if you can reach the panel without stepping into standing water; otherwise, leave it to someone who can do it safely.

Contain what you reasonably can. Towels, buckets, and getting anything valuable up off the floor help limit secondary damage, but this comes after the water is shut off, not before.

Warn the unit below. This step is specific to New York City’s multi-unit housing stock: water from a burst pipe travels through floor joists and ceiling cavities to the apartment below far faster than most people expect, and a ceiling that’s absorbed water for even a short time can sag or fail. Letting the unit below know immediately — and looping in building management — gives everyone a head start on their own containment.

Call an emergency plumber once the water is off. Shutting off the water stops the emergency from getting worse; it doesn’t fix the pipe. An emergency plumbing call, made the same day, is what gets the actual repair done and the water safely turned back on.

Why speed matters beyond the immediate flooding

Water left sitting in walls, floors, or ceilings for an extended period creates the conditions for mold growth — a timeframe of roughly 24 to 48 hours of sustained wetness is commonly cited in restoration-industry guidance as the point where that risk becomes real. A burst pipe handled quickly is a plumbing repair. The same pipe left unaddressed overnight can turn into a water-damage and mold remediation job on top of the original plumbing fix.