Emergency Plumbing → Burst Pipe
Four moves in the right order stop the damage. The third one is the step almost every guide leaves out, and it is the reason people think their shut-off valve has failed.
A pipe burst in house plumbing discharges continuously until the main valve is closed, and a single supply line can move hundreds of gallons in an hour. Repair runs $150 to $2,000 where the pipe is accessible, with a commonly reported average near $500.
A pipe burst in house pipework is stopped at one place only, the main valve. Everything below is ordered by what reduces the bill fastest, so act on the first section, then come back for the rest.
The first ten minutes
Clockwise until it stops on a wheel handle, a quarter turn to crosswise on a lever. This is the only step that stops the supply.
A basement faucet plus an outside spigot drains the water still standing above the break, which otherwise keeps feeding the leak.
Only from a dry position. If you cannot reach the panel without standing in water, call the power company to cut supply at the meter.
Wide shots, then close shots, then the failed component kept aside. Call a licensed plumber with the water already off.
Why open a tap after shutting off the water?
Because several gallons are still standing in the pipework above the break, and gravity keeps feeding them into your house after the valve is closed. Opening the lowest faucet and an outside spigot drains that column in under a minute.
This is the single most common reason a homeowner concludes the shut-off valve is broken. They close it, water keeps coming, and they panic. The valve is usually fine; the pipes above it simply have not emptied yet.
Open the lowest fixture you have, which in most homes is a basement laundry sink or a ground-floor bath. Add an outside hose bib if there is one. Leave them open until the flow stops entirely.
Do not attempt the repair itself
Licensed-plumber guidance published by Progressive is blunt on this point: do not try to repair a burst pipe yourself, because it usually leads to more damage. A clamp or self-fusing tape on a dry, depressurised pipe can buy a few hours. It is not a fix, and applying one to a live line under pressure can turn a joint repair into a section replacement.
There is one situation where step three jumps to step one: water already in contact with outlets, appliances or the panel itself. Then electricity is the hazard and the water is the symptom.
Never cross standing water to reach a breaker panel. If you can get to it dry-shod and dry-handed, kill the affected circuit or the main. If you cannot, phone your power company and ask them to cut supply at the meter, which they do routinely and without charge in an emergency.
A pipe burst in house walls is the expensive kind, because it runs unnoticed. Three checks locate most hidden breaks without opening anything.
Stains, bubbling paint, a musty smell and an unexplained bill increase are the slower signals. Our page on the warning signs of a hidden burst goes through each one and what it rules in or out.
Indicative US ranges. Always get a written quote.
| Job | Typical range | Notes |
|---|---|---|
| Burst pipe, accessible run | $150–$2,000 | Reported average around $500 |
| Burst pipe under slab or concrete | $500–$4,000+ | Locating and breaking concrete dominates the bill |
| Main water line repair | from ~$225 | Reported where the homeowner digs the trench |
| Overall reported range | $200–$3,000 | Across accessible and buried repairs |
| Emergency call-out on top | $75–$500 + $100–$350 / hr | Trip fee plus after-hours labor |
| Resulting water damage, severe cases | $5,000–$70,000 | The damage, not the plumbing repair |
Source: Angi burst-pipe repair cost data; Today's Homeowner emergency plumbing cost report; homeowner-reported figures from public forum threads, marked as reported (retrieved August 2026). Figures vary by region, severity and after-hours timing.
Figures last checked
Access, not the fitting, sets the price. The same copper joint failure is an hour of work in an open basement and a day of work under a slab, where the plumber has to locate the leak, break concrete, repair, and then make good.
That is also why a quote can legitimately rise once a wall is open. Ask for a fixed price to expose and diagnose, then a quoted repair once the damage is visible. Our breakdown of what emergency plumbing repair costs covers trip fees, minimums and the after-hours multiplier.
Old gate valves seize. Forcing one snaps the stem or shears the gate off inside the body, and a contained leak becomes an open main.
Try steady, even pressure and nothing more. If it will not move, go outside to the meter box near the kerb. That stop belongs to the water utility and is operated with a meter key, and your water company will close it for you if you call and say the interior valve has failed.
Does homeowners insurance cover a burst pipe?
Usually the damage, not the pipe. Sudden and accidental discharge is generally what a policy responds to, which covers wet drywall, flooring and contents. The failed component and the plumbing labor to replace it are often excluded, and gradual seepage almost always is.
Keep the failed section. A split length of pipe is physical evidence that the failure was sudden rather than a slow leak someone ignored, and that distinction is what the claim usually turns on.
Log the times too: when you found it, when you closed the valve, when the plumber arrived. Policies generally require prompt mitigation, so a clear timeline supports the claim rather than undermining it.
The repair and the drying are two different trades, and people are regularly surprised by the second bill. A plumber fixes the pipe. Wet insulation, drywall and subfloor are a restoration job.
Wet fibreglass insulation inside a wall cavity rarely dries in place, and closed cavities are where mold problems start. If the water reached materials rather than tile, expect a drying contractor with air movers for two to four days.
When the plumber re-pressurises, ask to be there. Bring the system back slowly and walk every joint on that run, because a pressure spike sometimes finds the next weak point immediately.
24/7 dispatch network
Tell us what failed and your ZIP code. Licensed, insured plumbers covering your area will contact you directly. Submitting costs nothing and there is no obligation to hire.
Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas utility or power company. Use this form once you are safe.
Know the line
Emergency Services 24H is a referral service. We do not employ plumbers and we do not carry out the repair.
Your request routes by ZIP code to licensed, insured contractors covering your area, and they contact you directly to quote and schedule. Price is settled between you and them, which is why the cost table above is published rather than hidden.
Straight answers
The questions homeowners actually search for on this problem, answered in plain language.
Browse all guidesClose the main water shut-off valve, then open the lowest faucet in the house to drain the pressure still sitting above the break. If water is anywhere near outlets, appliances or the panel, cut that power from a dry position first. Photograph everything before you mop, then call a licensed plumber.
Freezing is the usual cause: water expands as it turns to ice, pressure builds between the ice plug and a closed tap, and the pipe splits at its weakest point. High static water pressure, corroded old pipe, and physical damage from a nail or a fixing account for most of the rest.
Policies generally respond to sudden and accidental discharge, so damaged drywall, flooring and contents are usually the covered part while the failed pipe and the repair labor often are not. Gradual seepage is normally excluded. Keep the failed section of pipe as evidence of a sudden failure.
It depends almost entirely on how long it ran. A supply line can move hundreds of gallons in an hour, and the EPA puts the window before mold can establish in wet materials at 24 to 48 hours. Reported repair costs run from $150 on an accessible run to $4,000 or more under a slab.
Sustained sub-freezing temperatures, an unheated crawlspace or garage run, and any pipe on an exterior wall are the classic setup. The warning sign is a tap that slows to a trickle in cold weather, because that usually means an ice plug has already formed somewhere upstream.
Not once the main is closed, and that is the point. If you managed to isolate the break at a branch valve instead, the rest of the house can stay live, but check every joint downstream first. Running the system with a split open simply moves more water into the structure.
Checked . If a figure here no longer matches its source, that is a bug, so tell us and we will correct it.
24/7 dispatch network
Tell us what has failed and where you are. We route your request to licensed, insured contractors covering your ZIP code, and they contact you directly.
Fire, a gas smell, or an injury? Leave the building and call 911 first, then your gas utility or power company. Use this form once you are safe.