Shut off the main water valve, turn off power to wet areas if you can do it safely, open faucets to drain the lines, and call a plumber. Pipes usually burst from freezing, high water pressure, corrosion or physical damage. If you can't see the break but water is appearing or the meter is spinning, the burst is hidden and should be located before walls or floors are opened.
A burst pipe can release hundreds of gallons of water an hour. The damage depends almost entirely on how fast the water is shut off and how fast the break is found. Here’s what to do in the first minutes, what usually causes a pipe to burst, and how it gets fixed.
Do this right now
- Shut off the main water valve. See how to shut off the water to your house.
- Turn off electricity to wet areas at the breaker, only from a dry spot.
- Open faucets, starting at the lowest level, to drain the lines and relieve pressure.
- Turn off the water heater if the water will be off for a while.
- Move belongings and start removing water.
- Take photos and video before cleanup, for insurance.
- Call a plumber for the repair.
What causes pipes to burst
| Cause | Where it happens |
|---|---|
| Freezing | Exterior walls, crawl spaces, garages, attics, outdoor spigots |
| High water pressure | Anywhere; worse above 80 psi or without a working pressure-reducing valve |
| Corrosion | Older copper (pinholes), galvanized steel, failing polybutylene |
| Failed fittings | Push-fit and compression fittings, washer and fridge connectors |
| Physical damage | Nails or screws through a pipe, digging, settling |
| Water hammer | Pipes that bang when valves close quickly |
In central Indiana, freezing is the leading cause in winter. A frozen pipe often doesn’t leak until it thaws. See frozen pipe leaks.
Signs of a hidden burst pipe
Not every burst is obvious. If a pipe breaks inside a wall, ceiling, crawl space or under a slab:
- Rushing or hissing water sound with everything off
- A water meter spinning fast
- Sudden low pressure at every fixture
- Water coming from under baseboards, through a ceiling or light fixture
- Wet drywall, bubbling paint or stains that spread quickly
- In a slab home, water on the floor with no visible source, or warm spots
How burst pipes are repaired
| Situation | Typical repair |
|---|---|
| Short split in reachable pipe | Cut out the damaged section and splice in new pipe |
| Pinhole in copper | Repair clamp as a stopgap; cut out and replace the section |
| Burst inside a wall or ceiling | Open a small section at the break, repair, then patch |
| Under a slab | Spot repair through the floor, or reroute the line; see slab leak repair cost |
| Old pipe with repeated breaks | Replace the run or repipe the house |
Push-fit repair couplings are useful for a temporary fix, but have a plumber make the permanent repair.
Finding a burst you can’t see
When water is appearing but the break isn’t visible, guessing means opening wall after wall. Hidden water leak detection narrows it down first:
- Acoustic listening hears the pressurized leak inside the wall or under the floor.
- Thermal imaging shows the wet or warm pattern the water leaves.
- Moisture mapping shows how far the water spread.
- Isolation tests show which line broke: hot, cold or the service line.
The spot is marked so only one small opening is made.
Drying and insurance
The U.S. EPA advises drying water-damaged materials within 24–48 hours to prevent mold (EPA mold guidance). Most homeowners policies cover sudden water damage from a burst pipe but not the pipe itself. See burst pipe insurance claim in Indiana for the step-by-step claim process.
Prevent the next one
- Disconnect hoses and protect pipes in cold spaces before winter.
- Check your water pressure; add or repair a pressure-reducing valve if it’s over 80 psi.
- Replace old rubber appliance hoses with braided lines.
- Consider a leak sensor or automatic shutoff valve. See smart water leak detectors.
Get the break found
If you shut off the water but can’t find the break, we find hidden burst pipes across Bargersville and Johnson County, including Greenwood, Franklin and Whiteland.
Still can’t find it?
Our hidden water leak detection pinpoints the leak without tearing things up, so the repair starts in the right spot.
Frequently asked questions
What should I do first when a pipe bursts?
Close the main water shutoff valve. Then turn off power to any wet area from a dry spot, open faucets to drain the lines, move belongings out of the water, and take photos before cleanup.
What causes pipes to burst?
The most common causes are freezing, water pressure that's too high, corrosion in old copper or galvanized pipe, failed fittings, and physical damage from nails, screws or digging.
How do I know if a pipe burst inside a wall?
Signs are the sound of rushing or hissing water, a spinning water meter, a sudden drop in pressure, and wet drywall, stains or water coming from under baseboards or through the ceiling.
How much does it cost to fix a burst pipe?
A simple, easy-to-reach repair can be a few hundred dollars. Pipes inside walls, ceilings or under slabs cost more because of access and restoration. Water damage cleanup is usually the larger cost, which is why speed matters.