Burst Pipe or Major Water Leak — Act Now
A burst pipe or major leak is an emergency. Water damage costs an average of $7,000–$10,000 to repair, and it gets worse every minute. Your immediate priority is stopping the water. Don't try to repair this yourself — but there are critical steps you need to take right now while you wait for a plumber.
What's Happening
Pipes burst from freezing, corrosion, excessive pressure, or age. The water is under pressure and will continue flowing until the supply is shut off. Every minute of flooding increases damage to floors, walls, electrical systems, and belongings. Mold can begin growing within 24-48 hours of water exposure.
Emergency — Do This Immediately
- Shut off the main water valve. It's usually near the water meter, in the basement, crawl space, or outside near the street. Turn it clockwise to close.
- Turn off electricity to affected areas at the breaker panel if water is near outlets, wiring, or appliances.
- Call a licensed plumber. This is not a DIY repair.
- Open faucets to drain remaining water from the pipes after shutting off the main valve.
- Move furniture and valuables away from the water. Start removing standing water with towels or a wet vacuum.
- Document the damage with photos for your insurance claim before cleanup.
Do NOT Attempt to Repair This Yourself
A burst pipe or major supply line leak requires a licensed plumber. The repair may involve cutting and soldering copper pipe, replacing a pipe section, or addressing the underlying cause (frozen pipes, excessive pressure, corroded fittings). Improper repair can cause the leak to return or create new failure points.
Plumber rates $55–$195/hr; national pipe repair average $150–$205, per Thumbtack pipe repair data.
What to Expect from the Plumber
An emergency plumber will locate the failure point, stop the leak, and repair or replace the damaged section. For frozen pipe bursts, they'll also assess other vulnerable pipes. Expect $200-500 for a straightforward repair. If drywall or flooring needs to be opened to access the pipe, costs increase. Your homeowner's insurance typically covers burst pipe damage — call your insurance company the same day.
Frequently Asked Questions
Where is my main water shutoff valve?
Usually near the water meter — check your basement, crawl space, utility closet, or outside near the street. Turn clockwise or perpendicular to the pipe to close.
How much does burst pipe repair cost?
A straightforward pipe repair runs $200–$500. If the plumber needs to open walls or flooring to access the pipe, expect $500–$2,000. Water damage restoration (drying, drywall, flooring) is a separate cost that can reach $3,000–$10,000+ depending on how long the water ran. The sooner you shut it off, the lower the total bill.
What should I do if the pipe burst in my basement?
Shut off the main water valve immediately — basement pipes can flood fast. Turn off electricity to the basement at the breaker if there's standing water near any outlets or appliances. Don't enter standing water if electricity may be on. Use a wet vac or submersible pump to remove water quickly; mold starts within 24–48 hours. Document everything with photos before cleanup for your insurance claim.
Does homeowner's insurance cover burst pipes?
Most policies cover sudden burst pipes and resulting water damage. They typically don't cover gradual leaks or poor maintenance. File a claim the same day.
How do I know if a pipe burst inside a wall?
Signs include: a sudden drop in water pressure, wet or bubbling drywall, water stains appearing on ceilings or walls, a musty smell developing quickly, or the sound of running water when everything is off. If you suspect a burst pipe in a wall, shut off the main valve immediately and call a plumber — do not wait for visible flooding.
What causes pipes to burst?
The most common causes are freezing temperatures (water expands as it freezes, cracking the pipe), corrosion in older metal pipes, high water pressure, and physical damage. Pipes in exterior walls or unheated crawl spaces are most vulnerable in winter. If you've had a hard freeze and suddenly have no water pressure, assume a burst pipe until proven otherwise.
Let Toolbox Connect You With the Right Pro
This is not a DIY repair, but that doesn't mean you should go in blind. Use the Toolbox app to record a 30-second video of the problem. You'll get a clear diagnosis and an instant connection to a qualified professional who already understands the issue — no diagnostic fee, no explaining the problem three times, and no risk of being upsold on work you don't need.
Water Stopped — Now What?
Once you've stopped the flow, use Toolbox to document the damage and get guidance on the scope of repair before the plumber arrives — so you understand what you're dealing with.
First diagnosis free — no credit card.
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