A Pipe Just Burst: What To Do

Do this in the first five minutes

1. Shut the main water valve — do not just close the fixture's local valve.
2. Open the lowest faucet in the home to relieve pressure and drain remaining water from the lines.
3. Turn off electricity at the breaker for any wet room.
4. Turn off the water heater's power or gas once its supply is confirmed shut.
5. Contain standing water and start air movement, then photograph everything before cleanup.

Likely causes, most to least common

• Freeze damage — rare in South Florida but possible in exposed exterior pipes or attics during a hard cold snap
• Corroded or aged galvanized or copper pipe — common in homes built before the 1980s in Miami-Dade and Broward
• A sudden pressure spike, often from a failing pressure regulator or water hammer
• Physical damage from renovation, a nail, or root intrusion on buried lines
• A failed fitting or soldered joint under long-term stress

Where the main shutoff usually is

In Florida homes, look for a valve at the meter box near the street, on the exterior wall where the supply enters, or in a garage or utility closet. Knowing its location before an emergency happens is the single most useful thing a homeowner can do.

Emergency vs. can-wait

A burst pipe is always an emergency — there is no version of active spraying or gushing water that can wait. If you've fully closed the main and the flow has stopped with no ongoing drip, you can schedule the repair within the same day rather than treating it as a life-safety call, but leave the water off until then.

What a professional checks, in order

• Confirms the main is closed and isolates which branch line failed
• Inspects the failure point for corrosion, impact damage, or a pressure-related cause
• Checks whole-house pressure with a gauge, since an unaddressed regulator failure can cause a repeat burst
• Assesses surrounding pipe of the same age and material for similar risk before closing up the repair

What makes it worse

• Only closing the fixture valve instead of the main, which leaves the break pressurized
• Using towels alone instead of shutting off electricity in a wet room with outlets
• Delaying repair after the water is off — a re-pressurized line can burst again at the same weak point
• Ignoring a whole-house pressure problem that likely caused the burst in the first place

South Florida notes

Hard water and municipal supply pressure swings accelerate corrosion in older copper and galvanized lines common in aging Miami-Dade and Broward housing stock. Homes on well supply should also have a pump and pressure tank checked, since pump-driven surges can contribute to a burst.