What to Do in the First Hour After a Pipe Bursts

When a pipe bursts, the order you do things in matters more than how fast you move. Close the water, make the room safe to be in, record what happened, and then start the calls that stop the damage from spreading into materials that cannot be saved. The sections below follow one hour in that order.

Stop the water in the first five minutes

The main valve is the one thing that ends the flooding. IBHS’s guidance for preventing interior water damage starts with knowing where it is, and in a burst pipe it is the first place you go. It is usually where the water line enters the house, near the water heater, or in a box at the edge of the property. If you have never closed it, this is a bad time to learn, so read the guide to finding and testing your main shutoff this week.

Close the valve fully, then open a faucet on the lowest floor. That lets the pressure out of the pipes so the break stops pushing water. Two things catch people. First, a tank water heater holds a lot of water by itself, and IBHS notes that tanks holding 40 to 100 gallons can release large amounts if they fail, so a closed main does not make a leaking heater harmless. Second, if the break is in an exterior wall or the attic, water can keep draining out of the cavity after the supply is off. Do not assume it is over because the sound has stopped.

If you cannot reach the valve without wading through water near electrical equipment, do not try. Call your water utility’s emergency line and tell them water is running inside a building.

Handle power and people in minutes 5 to 15

Water and electricity decide who goes where. Get everyone, including pets, out of rooms with standing water. CDC’s flood re-entry guidance says never to turn power on or off yourself if you would have to enter standing water to reach the switch, and to call an electrician instead. That guidance is written for floods, but the physics is the same for a burst pipe in the kitchen. Outlets, power strips, appliance cords and the panel itself are the hazards.

• If the panel is dry and the path to it is dry, switch off the breakers for the wet rooms.
• If you smell gas, leave and call 911 and the gas utility from outside.
• Do not use a household vacuum on standing water. It is an electrical hazard and it ruins the vacuum.
• Do not stand under a ceiling that is bulging or dripping steadily. Wet drywall and insulation are heavy and drop without warning.

Contain and document in minutes 15 to 30

Once the room is safe, protect what you can and record what happened. Lift furniture legs off wet carpet, move rugs and boxes off the floor, and take electronics out of the room. Remove standing water where it is safe to do so with towels, a mop or a wet vacuum rated for water. The Texas Department of Insurance’s storm recovery guidance lists removing standing water as an early step.

Then photograph and film. TDI’s claim guidance says to take photos and videos of all damage and keep receipts for all expenses. A good set includes a wide shot of each room, a close shot of each damaged surface, the failed pipe or fitting if you can see it, the closed valve, and a short video walking through every affected room while you narrate what you see. Write down the time you found the water and the time you closed the main.

Make the calls in minutes 30 to 60, in order

If water is coming through a ceiling

A ceiling that is bulging holds a pocket of water. Staying out from under it is the priority. A small controlled hole at the lowest point of the bulge can let it drain safely, but only when you can do it without standing under it and without wiring in the way. If you are not sure, put a bucket where it will land, keep people out of the room and wait for a technician. The winter ceiling and attic page covers how ceilings are judged afterward.

Rentals, condos and after hours

The steps shift when you do not own the whole building, or when it is the middle of the night.

• Renters. Close the unit’s shutoff if you can reach it, then call the landlord’s or manager’s emergency number, not the daytime office line. TDI says most homeowners and renters policies cover sudden and accidental water damage, which for a tenant usually means your belongings. The building is the landlord’s.
• Condo owners. The association may own the risers and the walls. Call the manager or the board’s emergency contact first, then your insurer, and ask which parts of the unit the association insures and which are yours.
• After hours. Most managers and associations keep an emergency line. If nobody answers, close what you can, document, leave a written message with the time and call again. Keep a log of every attempt, because it shows you acted.
• Neighbors below. Knock and tell them. Water you cannot see is probably already in their ceiling.

Whoever you reach, say the same four things: where the water is, what it came from, whether it is still running and whether anyone is in danger.

What makes it worse

• Waiting for the adjuster before starting to dry. Temporary protective steps are normal. TDI’s recovery tips say to remove standing water and also not to throw things away until the adjuster says so. Both are true: photograph, keep a representative piece, tell the adjuster what you are removing and why.
• Permanent repairs too early. TDI’s guidance is to make only temporary repairs and not permanent ones until you have talked to your insurer.
• Painting or laying flooring over wet materials. It hides the problem and traps the moisture.
• Leaving the heat and fans to do the work. A space heater or ceiling fan in a room with standing water does not dry the wall cavity behind it.
• Assuming a small leak is a small loss. Water inside a wall or attic can be far larger than the stain.

The 24 to 48 hour clock

EPA’s mold guidance says it is important to dry water-damaged areas and items within 24 to 48 hours to prevent mold growth, and that if damp materials are dried in that window mold will not grow in most cases. CDC’s mold guidance gives the same window for cleaning up and drying out after a flood. That is the reason to call a restoration company in the first hour and not the next afternoon: extraction and equipment need to be running before the window closes, and the decisions about what to remove depend on how long things have been wet.

None of this replaces a plumber or an insurer. It sets the order: stop the water, make it safe, record it, call, dry. The first hour is mostly about not losing the next two days.

Read about frozen and burst pipe cleanup →

This article is general information from the Dallas Flood Guard editorial team. It is not medical, legal, engineering or insurance advice. Sources are linked above. See the editorial policy for how posts are researched and corrected.