When a pipe bursts, the single most important thing is to stop the flow of water — every minute one runs open can add gallons to the flood. Shut off the water at the fixture’s local valve if the leak is under a sink or behind a toilet, or at your home’s main shutoff if you can’t isolate it. In most Houston homes the main valve is at the water meter near the street, or where the main line enters the house. Once the water is off, you can wrap or clamp the split pipe as a temporary patch until a plumber arrives.
Find your main shutoff and know how it works before an emergency — the middle of a flood is a bad time to go looking for it.
Watch how it's done
Video: Service Stars. Shown for reference — not affiliated with GetHoustonLeads.
What you'll need
- A water meter key or adjustable wrench
- Rags and a bucket
- A flashlight
- Waterproof gloves
Recommended parts & supplies
- Pipe repair wrap tape — hardens around a leak in minutes
- Pipe repair clamp — seals a split or pinhole leak
- Water meter shutoff key — turns a stiff curb-stop or meter valve
- Leak stop epoxy putty — molds over joints and cracks
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Step by step
- 1
Shut off the nearest local valve first
If the leak is at a toilet, sink, water heater, or appliance, look for the small oval or football-shaped valve on the supply line right at the fixture. Turn it fully clockwise (right) to close it. This isolates just that fixture and lets the rest of the house keep water — the fastest fix when the burst is at one spot.
- 2
Find your main water shutoff
If there’s no local valve or the leak is in the wall or floor, go to your main shutoff. In Houston it’s usually one of two places: at the water meter box near the street or sidewalk (a valve beside the meter, often needing a meter key), or where the main line enters the house — commonly on an outside wall, in the garage, or near the water heater. Locate it now, before you ever need it.
- 3
Turn the main valve off
For a round handle, turn clockwise until it stops. For a lever (ball valve), rotate it a quarter turn so it sits crosswise to the pipe. At the meter, use a meter key or wrench to turn the valve a quarter turn. If the valve is stiff, be firm but steady — forcing a corroded old valve can snap it and make things worse.
- 4
Open a low faucet to drain the lines
With the water off, open the lowest faucet in the house (an outdoor spigot or a ground-floor tub) and flush a toilet. This drains the pressure and remaining water out of the pipes so the burst stops dripping and you can work on it dry.
- 5
Wrap or clamp the burst pipe temporarily
Dry the pipe as best you can, then apply a temporary patch: stretch self-fusing pipe repair tape tightly over and past the split, wrap a rubber-lined repair clamp over the hole, or knead epoxy putty around a leaking joint. These are stopgaps, not permanent repairs — they buy you time to get a plumber, not a reason to skip one.
- 6
Start drying and document the damage
Once the leak is stopped, photograph the burst and any water damage for your insurance claim, then begin mopping and drying with a shop vacuum and fans. The sooner you dry the area, the less chance of warped floors and mold in Houston’s humidity.
When to call a pro
Call a licensed plumber for the actual repair — a temporary wrap or clamp is only holding until they arrive, and a pipe that burst once (especially from age, corrosion, or a slab leak) often needs a proper section replaced. Call right away if you can’t find or close the shutoff, if the burst is inside a wall, ceiling, or the slab foundation, or if water is still coming out after you’ve closed the main. And if the leak has already soaked drywall, cabinets, or flooring, bring in a water-restoration pro alongside the plumber to dry the structure out before mold takes hold.
Get a free quote from a local pro
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How to Shut Off Your Water and Stop a Burst Pipe Fast — FAQ
Where is the main water shutoff valve in a Houston home?
How do I temporarily stop a burst pipe?
Why do pipes burst in Houston?
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