Pipe Burst in House: What to Do Right Now

Last updated: April 2026

By the Plumbing Price Guide Team

If a pipe just burst in your house, the first thing you need to do is shut off the main water valve. Call an emergency plumber at (641) 637-5215 once the water is off. This guide walks you through every step: stopping the water, protecting your home from further damage, temporary fixes while you wait for a plumber, understanding the costs, and dealing with your insurance company. A burst pipe is one of the most damaging plumbing emergencies a homeowner can face, but acting quickly in the first few minutes makes a significant difference in how much damage occurs and how much the repair ultimately costs.

For detailed pipe repair pricing, see our pipe repair cost guide. For emergency plumber rates and what to expect, see emergency plumber costs. For a full overview of plumbing emergencies, see our plumbing emergency guide.

Stop the Water Right Now

Your main water shutoff valve controls all water flowing into your home. When a pipe bursts, the full pressure of the municipal water supply is pushing water through the break. Shutting this valve stops the flow completely. Until it is closed, water will continue pouring into your house at full force.

Step 1: Locate the Main Water Shutoff Valve

The main shutoff is almost always located where the water supply line enters the house. In most homes, this is in the basement or crawl space on the wall facing the street. It may be a round gate valve (turn clockwise multiple rotations until tight) or a ball valve with a lever handle (turn the lever perpendicular to the pipe). If you have never located your shutoff valve before, look for a brass or copper valve on a pipe coming through the foundation wall, typically within a few feet of the water meter.

Step 2: Turn It Clockwise Until It Stops

Gate valves require multiple full turns. Keep turning clockwise until the handle will not turn any further. Do not force it beyond the stopping point, as older gate valves can break if overtorqued. Ball valves require only a quarter turn; the lever should end up perpendicular (90 degrees) to the pipe. Once the valve is fully closed, the water flow from the burst pipe should slow to a trickle and then stop within 30 to 60 seconds as pressure bleeds off.

Step 3: If the Valve Will Not Close

Older gate valves that have not been operated in years can seize. If the valve will not turn, do not use excessive force or a wrench, as you may snap the valve stem and create a second emergency. Instead, try these fallback options:

• Shut off at the street meter. The municipal shutoff is at the water meter, typically located in a box or pit near the curb in front of your home. You may need a meter key (a long T-handled tool available at hardware stores for $10 to $15) to turn the valve. Turn the valve clockwise a quarter turn.
• Call the water utility. Most water utilities have an emergency line that can dispatch someone to shut off your water at the main.
• Call 911 if the situation is dangerous. If water is flooding near your electrical panel and you cannot stop it, call 911. This is a life safety issue.

Step 4: Open Faucets to Drain Remaining Pressure

After the main valve is closed, open several faucets throughout the house (both hot and cold). This drains the water remaining in the pipes and releases pressure, which reduces the amount of water that can continue to leak from the burst section. Start with a faucet on the lowest floor. If you have a bathtub, opening that faucet drains the most volume. Flush toilets to empty the tanks.

Once the water is off and faucets are open, the immediate crisis is controlled. You have bought yourself time to address the next priorities: electrical safety, damage documentation, and calling for help.

Turn Off the Electricity

Water and electricity are a lethal combination. Before you wade into a flooded area, walk through standing water, or touch anything wet, you need to assess the electrical risk. This step is not optional. Electrocution from residential flooding is a real and documented cause of death in home emergencies.

When to Turn Off the Breaker

Turn off the circuit breaker for the affected area if water is near electrical outlets (within 2 feet or closer), if water is pooling on the floor in a room with floor-level or baseboard outlets, if water is dripping from the ceiling near light fixtures, if water is near any major appliance (washer, dryer, dishwasher, water heater), or if you can hear buzzing or see sparks. Turn off the breaker at your electrical panel before entering the flooded space.

When to Turn Off the Main Breaker

Turn off the main breaker (which kills power to the entire house) if water is near, touching, or approaching your electrical panel, if your electrical panel is in the basement and the basement is flooding, if you are unsure which individual breakers control the affected area, or if you see any sign of electrical arcing, sparking, or smell burning insulation. If you cannot safely reach the electrical panel because it is in the flooded area, do not enter. Call 911 or your electrical utility's emergency line.

After the Power Is Off

Once the breakers are off for the affected area, you can safely enter to contain water, move belongings, and document damage. Use battery-powered flashlights or headlamps rather than candles (candles are a fire risk in a water-damaged area with exposed insulation or gas lines). Do not restore power to the affected area until a qualified electrician has confirmed the wiring is dry and safe.

How to Find Your Main Water Shutoff Valve

The location of the main shutoff varies by house type, age, and region. If you are reading this during an active emergency and cannot find your valve, skip to the fallback option (shut off at the street meter) and call a plumber. If you are reading this before an emergency, locate and test your valve now.

Homes with a Basement

The main shutoff is almost always in the basement, on the wall facing the street. Look for a valve on the water supply pipe within 3 to 5 feet of where the pipe enters through the foundation wall. The valve is typically near the water meter. In older homes, the shutoff may be a round gate valve (red or black wheel-shaped handle). In newer homes or after a remodel, it is often a ball valve (a lever handle). The pipe entering the foundation usually comes from the direction of the street. If the basement is finished, the valve may be behind an access panel or inside a utility closet.

Homes with a Crawl Space

In homes with a crawl space instead of a full basement, the shutoff is typically located where the supply line enters the crawl space from the ground. It is usually within a few feet of the entry point, often near a support pier or along the foundation wall facing the street. If the crawl space has an access door, the valve is frequently near the entry point for accessibility. In some homes, the shutoff was placed inside the house in a utility closet, laundry room, or kitchen cabinet on the wall facing the street.

Slab Foundation Homes

Homes built on a concrete slab (common in warm climates, the South, and the Southwest) often do not have an interior shutoff in the traditional location. In slab homes, the shutoff may be in the garage on the wall facing the street, in a utility closet near the water heater, outside the home near the foundation on the street-facing side (look for a pipe stub with a valve coming out of the ground near the exterior wall), or at the water meter near the street. Some slab homes have no interior shutoff at all, and the only option is the meter box at the curb.

Outdoor and Street-Side Shutoff

Every home connected to municipal water has a shutoff at the water meter, which is usually located in a covered box or pit near the curb or sidewalk in front of the home. Lift the meter box lid (it may be heavy; use a screwdriver or pry tool). Inside, you will see the water meter and a valve on the street side. This valve requires a meter key to turn. Meter keys are available at hardware stores for $10 to $15 and are worth keeping in your home. Turn the valve clockwise a quarter turn to shut off all water to the house.

What Caused the Pipe to Burst?

Understanding why the pipe burst matters for two reasons: it determines whether the same thing is likely to happen again in another pipe, and it affects your insurance coverage. A burst caused by a sudden, accidental event (freezing) is generally covered by insurance. A burst caused by long-term neglect (corroded pipes you knew about) may not be.

Freezing: The Most Common Cause in Cold Climates

When water freezes inside a pipe, it expands by approximately 9% in volume. The expanding ice creates enormous pressure inside the pipe, often exceeding 2,000 PSI. The pipe does not always crack at the point of the ice blockage. Instead, the pressure builds between the ice plug and the nearest closed valve or faucet, and the pipe ruptures at the weakest point downstream from the ice. This means the actual crack can be several feet away from where the pipe froze.

The most freeze-vulnerable pipes in any home are those in exterior walls (especially on north-facing walls), pipes in unheated spaces such as attics, garages, and crawl spaces, pipes in cabinets on exterior walls (under kitchen and bathroom sinks), and outdoor hose bibs that were not drained before winter. The burst often does not become apparent until the ice thaws. Homeowners frequently wake up to a frozen pipe, leave for work, and return to a flooded house when the ice melts and water begins flowing through the crack.

For guidance specific to frozen pipe situations, see our guides on frozen pipes in Chicago and frozen pipes in Minneapolis, which cover prevention and thawing in detail.

Corrosion and Age

Galvanized steel pipes, common in homes built before 1960, corrode from the inside over decades. The interior of the pipe develops a progressively thicker layer of rust that narrows the water flow and weakens the pipe wall. Eventually, the remaining wall thickness cannot withstand normal water pressure and the pipe fails. This can be a pinhole leak that gradually worsens, or it can be a sudden rupture. Copper pipes can also develop pinhole leaks from aggressive water chemistry (low pH, high mineral content) over 20 to 50 years. If your home has galvanized or aging copper supply pipes, a single burst pipe may be a warning sign that more failures are coming. A whole-house repipe may be worth evaluating after the emergency is resolved.

Excessive Water Pressure

Normal household water pressure should be between 40 and 80 PSI. Municipal water systems sometimes deliver pressure above 80 PSI, and in some neighborhoods the pressure at the meter exceeds 100 PSI. High pressure stresses pipe joints, fittings, and any weakened sections of pipe continuously. Over time, this constant stress accelerates corrosion-related failures and can cause sudden bursts at fittings or soldered joints. A pressure-reducing valve (PRV) set to 60 to 70 PSI is the standard solution, and costs $350 to $600 installed. You can test your home's water pressure with a $10 gauge that threads onto any hose bib. If your pressure is above 80 PSI, address it after the current emergency. For more on plumber hourly rates, see our cost guide.

Physical Damage and Defective Fittings

Pipes can burst from physical impact (a nail driven into a pipe during a renovation, a heavy object falling on an exposed pipe), from defective push-fit fittings that fail under pressure, or from water hammer (the pressure surge caused by suddenly closing a valve, such as when a washing machine or dishwasher solenoid shuts off abruptly). Water hammer arrestors ($10 to $30 each, installed at the appliance connection) prevent this type of damage.

Temporary Fixes That Buy You Time

A temporary fix is not a repair. Its purpose is to slow or stop the leak long enough for a plumber to arrive. If you have shut off the main water valve, a temporary fix may not be necessary since there is no pressure forcing water through the pipe. But if you need to restore water to the house before the plumber can arrive (for drinking, cooking, or sanitation), or if the shutoff valve is not fully holding, a temporary patch can contain the situation.

Pipe Repair Clamp

A pipe repair clamp is a two-piece metal sleeve with a rubber gasket that bolts around the pipe, compressing the rubber over the crack. This is the most reliable temporary fix. Repair clamps are available at most hardware stores for $5 to $15 and come in common pipe sizes (1/2 inch, 3/4 inch, 1 inch). To install: clean the pipe surface around the crack, place the rubber gasket over the crack, position the two halves of the clamp around the pipe, and tighten the bolts evenly until snug. A properly installed repair clamp can hold for days or even weeks under normal pressure.

Epoxy Putty

Epoxy putty (such as J-B Weld PlumberWeld or similar products) is a two-part compound that you knead together and press over the crack. It hardens in 20 to 30 minutes and cures fully in 1 to 2 hours. The pipe must be dry and clean for epoxy to adhere properly. This works reasonably well for pinhole leaks and small cracks. It is less reliable for larger splits or for joints and fittings. Cost: $5 to $10 at any hardware store.

Rubber Patch with Hose Clamps

Cut a piece of rubber (from an old inner tube, a piece of rubber sheeting, or even a thick rubber glove) large enough to cover the crack with at least 1 inch of overlap on all sides. Wrap the rubber tightly around the pipe over the crack, and secure it with hose clamps tightened over the rubber. Use at least two hose clamps, one on each side of the crack. This creates a compression seal similar to the repair clamp, using materials you may already have.

Pipe Repair Tape (Silicone Tape)

Self-fusing silicone tape bonds to itself when stretched and wrapped tightly. Wrap the tape around the pipe starting 2 to 3 inches before the crack, pulling it tight and overlapping each layer by half. Continue wrapping 2 to 3 inches past the crack. Apply at least 4 to 6 layers. This works for minor leaks and slow seepage. It is the least reliable temporary method for a fully burst pipe under pressure, but it can reduce the flow rate.

The Water Damage Timeline

Understanding how quickly water damage progresses helps homeowners make informed decisions about urgency. The damage from a burst pipe is cumulative: the longer the water sits, the worse and more expensive the consequences. This timeline assumes standing water or saturated materials that are not being actively dried.

Immediate (First Minutes)

Water spreads across floors, seeps into carpet padding, wicks into drywall, and begins soaking into wood subfloor. Personal property on the floor or in contact with water begins absorbing moisture. Drywall that is in contact with standing water starts wicking moisture upward through capillary action. On carpet, the padding saturates faster than the carpet itself and traps water underneath. Hardwood floors begin absorbing water at the seams.

Within 1 to 4 Hours

Drywall has wicked moisture 12 to 24 inches above the water line. Particleboard furniture in contact with water begins swelling and delaminating. Colors from rugs, fabrics, and wood stains begin bleeding onto flooring. Moist conditions attract bacteria growth on wet surfaces. Metal surfaces in contact with water begin showing early oxidation.

Within 24 Hours

Mold spores, which are present in every home in dormant form, begin to germinate and grow on wet organic materials (drywall paper, carpet backing, wood, cardboard). Drywall has swollen and may be soft or crumbling at the base. Hardwood floors have cupped (edges higher than the center of each board). The musty smell of active microbial growth becomes noticeable. Carpet padding that has been wet for 24 hours typically cannot be salvaged and must be replaced.

Within 48 Hours

Mold growth is visible on drywall, baseboards, and other organic materials. Drywall and insulation behind walls are saturated and may need removal. Wood structural members (floor joists, subfloor) have absorbed significant moisture and are at risk of warping. Laminate flooring has swollen at the joints and is likely unsalvageable. Metal fasteners and nails in saturated wood begin rusting.

Within 7 Days

Mold colonies have spread and may be behind walls, under flooring, and in areas that were not directly flooded. Structural wood members are weakened from sustained moisture exposure. Subfloor delamination can occur in engineered products (OSB, plywood). The remediation scope has expanded significantly beyond the original wet area. Costs at this stage are typically 3 to 5 times higher than if the water had been addressed within the first 24 hours. For a comprehensive breakdown of repair costs, see our pipe repair cost guide.

What the Emergency Plumber Will Do When They Arrive

Knowing what to expect from the plumber visit helps homeowners understand the process and evaluate whether they are being charged fairly. A typical emergency burst pipe repair follows a predictable sequence.

Assessment and Diagnosis

The plumber will first confirm the water supply is shut off and inspect the burst location. They will determine the type of pipe material, the nature of the failure (freeze crack, corrosion hole, joint separation, fitting failure), the pipe size, and the accessibility of the damaged section. If the burst is visible and accessible, this takes 10 to 15 minutes. If the burst is behind a wall or under a floor, the plumber will need to cut an access hole to locate the exact point of failure. This diagnostic access alone can take 30 to 60 minutes.

Isolation and Pipe Repair

The plumber will cut out the damaged section of pipe and replace it with new pipe and fittings. The repair method depends on the pipe material. Copper pipes are repaired with a new section of copper joined by soldered (sweated) fittings or compression fittings. PEX pipes are repaired with crimp or push-fit fittings. Galvanized steel pipes are typically repaired by replacing the damaged section with copper or PEX, using a transition fitting where the new material meets the old. CPVC pipes are joined with solvent cement. A straightforward exposed pipe repair takes 1 to 2 hours. A pipe behind a wall or in a hard-to-reach location takes 2 to 4 hours.

Pressure Test and Restoration

After the repair, the plumber will slowly turn the water back on and test the repaired section under pressure. They will check for leaks at every new joint and fitting. Once the repair passes the pressure test, the plumber will advise you on next steps: whether the surrounding pipes are in good condition or showing signs of similar failure, whether a repipe should be considered, and whether the water pressure is too high (requiring a pressure-reducing valve).

What the Plumber Will Not Do

Most plumbers do not perform water damage restoration (drying, dehumidification, mold remediation) or drywall repair. These are separate trades. If the plumber cut an access hole in drywall to reach the pipe, patching that hole is typically your responsibility or a separate contractor. The plumber also will not file your insurance claim, although they can provide documentation of the cause and repair.

How Much Does Burst Pipe Repair Cost?

Burst pipe repair costs vary significantly based on three factors: when the call happens (emergency vs. standard hours), where the pipe is located (accessible vs. behind a wall or underground), and how much secondary damage occurred. Here is a breakdown of the typical costs.

The emergency service call fee typically covers the plumber's travel and the first 30 to 60 minutes on site. Additional time is billed at the emergency hourly rate, which ranges from $150 to $300 per hour nationally. Standard business-hour rates run $75 to $150 per hour. The difference between calling at 2 AM and calling at 8 AM can be $200 to $400 or more in the total bill.

However, as the damage timeline section above illustrates, the 6 hours of additional water exposure between 2 AM and 8 AM can add thousands of dollars in water damage mitigation costs. A homeowner facing a burst pipe at 2 AM should weigh the $200 to $400 emergency premium against the potential for $2,000 to $5,000 in additional water damage.

For full national cost data, see our pipe repair cost guide and emergency plumber cost guide.

Will Insurance Cover a Burst Pipe?

Most standard homeowners insurance policies cover sudden and accidental water damage from a burst pipe. This coverage typically includes damage to floors, walls, ceilings, and personal property affected by the water. However, the specifics vary by policy and by the cause of the burst.

What Is Typically Covered

Damage resulting from a sudden pipe burst caused by freezing, a sudden pressure spike, or an accidental failure is generally covered under your homeowners policy. This includes the cost of water extraction and drying (mitigation), repair or replacement of damaged flooring, drywall, insulation, and fixtures, replacement of personal property damaged by the water, and additional living expenses if the home is uninhabitable during repair. Coverage limits and deductibles apply. Most policies have a per-occurrence deductible of $500 to $2,500.

What Is Typically Not Covered

The pipe repair itself is often excluded from coverage. Insurance covers the damage the water caused, not the plumbing repair that stopped it. Gradual leaks (a pipe that has been seeping for weeks or months) are typically excluded on the grounds of maintenance neglect. Pipes that failed due to known, pre-existing corrosion may be excluded if the insurer determines the homeowner should have replaced them. Flood damage (water entering from outside the home) requires separate flood insurance and is not covered under standard homeowners policies.

Documentation Is Critical

Start documenting immediately. Photograph the burst pipe itself, showing the type of pipe and the nature of the failure. Photograph the water level, the affected rooms, and all damaged property. Video is even better. Time-stamp everything. Save receipts from any emergency purchases (towels, fans, wet/dry vacuum, temporary repair supplies). Keep a written log of what happened and when. Do not discard damaged materials until the insurance adjuster has inspected them or given you written permission to do so. Contact your insurance company within 24 hours of the event. Delayed reporting can jeopardize your claim.

Plumber vs Water Mitigation Company: You May Need Both

Homeowners dealing with a burst pipe for the first time often assume the plumber handles everything. In most cases, two separate specialists are needed, and understanding who does what prevents confusion and delays.

What the Plumber Does

The plumber diagnoses the pipe failure, repairs or replaces the damaged pipe section, pressure tests the repair, and restores water service. The plumber may also assess the overall condition of your plumbing system and recommend further work (such as replacing other sections of corroded pipe or installing a pressure-reducing valve). The plumber's scope ends when the pipe is fixed and water service is restored.

What the Water Mitigation Company Does

A water mitigation company (also called a restoration company) handles everything related to the water damage itself. This includes extracting standing water using commercial pumps and vacuums, setting up industrial dehumidifiers and air movers to dry the structure, removing damaged drywall, insulation, carpet padding, and other unsalvageable materials, applying antimicrobial treatments to prevent mold growth, monitoring moisture levels with meters until the structure is dry, and in some cases, performing the rebuild (new drywall, flooring, paint). The mitigation process takes 3 to 7 days for a typical residential burst pipe event.

The Order of Operations

Call the plumber first to stop the leak and repair the pipe. While waiting for the plumber, begin your own water removal (towels, mops, wet/dry vacuum). After the pipe is repaired, call the mitigation company to begin professional drying. Contact your insurance company, which may have a preferred mitigation vendor. Do not wait for the insurance adjuster before starting mitigation, as the adjuster may take days to arrive. Delayed mitigation results in dramatically higher costs and is not a reason insurers accept for increased claims.

Costs for Mitigation

Professional water mitigation typically costs $1,500 to $5,000 for a single-room event and $5,000 to $15,000+ for multi-room or whole-floor flooding. The primary cost drivers are the square footage affected, the category of water (clean supply water vs. sewage), and the number of days required for drying. Most mitigation companies work directly with insurance companies and can bill the insurer directly.

When to Stop Trying and Call a Plumber

Some homeowners attempt to handle a burst pipe entirely on their own. While shutting off the water and applying a temporary fix are appropriate immediate actions, there are clear situations where professional help is the only safe and effective option.

Call a Plumber Immediately If:

• You cannot find or operate the main water shutoff valve
• The shutoff valve is closed but water is still flowing (valve failure)
• The burst pipe is behind a wall, in a ceiling, under a floor, or underground
• The pipe material is galvanized steel and the burst may indicate widespread corrosion
• Multiple pipes are leaking or showing signs of failure simultaneously
• You smell gas in addition to the water leak
• Water is near or in contact with electrical systems
• The burst is on a hot water line and water is scalding hot
• Your temporary fix is not holding and water is still leaking

Decision Factors

If you have shut off the water, the leak has stopped, and you can monitor the situation, scheduling a plumber for the next available appointment (even if that means waiting until morning) is reasonable. If any of the conditions above apply, call now. The cost difference between an emergency call and a standard-hours call is $200 to $400. The cost difference between prompt professional repair and delayed, amateur repair can be thousands of dollars in water damage.

For guidance on evaluating plumbers, see how to find a good plumber. For help deciding whether your situation requires a professional, see when to call a plumber.

What NOT to Do When a Pipe Bursts

Knowing what to avoid is as important as knowing what to do. These common mistakes make the situation worse or more expensive.

• Do not ignore a small leak and assume it will stop. A pinhole leak from a corroded pipe is a failure in progress. It will get worse, often suddenly and without warning. What looks like a manageable drip at 8 PM can be a flooded basement by 6 AM.
• Do not use an open flame or torch to thaw frozen pipes. This is a documented cause of house fires. Pipes run through wall cavities near wood framing, insulation, and other combustible materials. Use a hair dryer on a low setting, electric heat tape, or towels soaked in hot water wrapped around the pipe.
• Do not turn the water back on to "test" a temporary fix under full pressure. Turn the water on slowly, a quarter turn, and check the repair. If it holds, open the valve further in small increments. A temporary patch that fails under full pressure instantly floods the area again.
• Do not run water elsewhere in the house while the burst is active. Flushing a toilet, running a dishwasher, or using a faucet adds water volume and pressure to the system, increasing the flow rate through the burst.
• Do not throw away damaged materials before documenting them. Insurance adjusters need to see the damage. Photograph everything in place first. Keep damaged materials until the adjuster gives written approval to discard them.
• Do not delay calling your insurance company. Most policies require "prompt" notification of a loss. Waiting days or weeks to report the event can complicate your claim.

Preventing Future Pipe Bursts

After the immediate emergency is resolved, addressing the underlying cause prevents a repeat event. The prevention steps depend on why the pipe burst in the first place.

If the Pipe Burst from Freezing

• Insulate all pipes in unheated spaces (crawl space, attic, garage, exterior walls) with foam pipe sleeves ($1 to $3 per linear foot)
• Seal air leaks around pipes where they pass through exterior walls using spray foam or caulk
• Keep the thermostat at 55F or higher when away from home in winter
• Open cabinet doors under sinks on exterior walls during cold snaps
• Disconnect and drain outdoor hoses before the first freeze
• Consider electric heat tape ($15 to $50 per section) on pipes with a history of freezing

If the Pipe Burst from Corrosion

• Have a plumber inspect the remaining pipe for similar corrosion
• Consider a whole-house repipe if the plumber finds widespread corrosion (galvanized steel pipes over 50 years old are strong candidates)
• Install a water pressure gauge and confirm pressure is below 80 PSI
• If pressure is high, install a pressure-reducing valve ($350 to $600)

If the Pipe Burst from Pressure

• Install a pressure-reducing valve (PRV) if your supply pressure exceeds 80 PSI
• Install water hammer arrestors on washing machine and dishwasher supply lines ($10 to $30 each)
• Have the plumber check for thermal expansion issues if you have a closed plumbing system (a system without a pressure relief mechanism on the water heater tank)

For a comprehensive list of preventive maintenance tasks, see our plumbing maintenance checklist.

Emergency Supplies to Have on Hand

Homeowners who keep a few basic supplies on hand can respond to a burst pipe faster and more effectively. None of these items are expensive, and all of them can reduce damage in the critical first minutes.

Total cost to assemble a basic pipe emergency kit: $80 to $175. This investment can prevent thousands of dollars in water damage by enabling a faster response in the first critical minutes.

For more emergency preparedness information, see our plumbing emergency guide. For general pipe repair information and costs, see our pipe repair cost guide. For help evaluating whether your plumbing system needs broader attention after this emergency, see our guides on repiping costs and when to call a plumber.

Frequently Asked Questions