The four moves, in order
Water damage compounds by the minute, so the order matters more than speed on any single step.
Shut off the main water valve
It’s usually near where the water line enters the house, at the water heater, or in a box at the street. Turn it clockwise (or a quarter-turn until the handle is perpendicular to the pipe). Every minute the main stays open, more water enters the walls.
Open a low faucet to drain pressure
A tub spout or an outdoor hose bib works. Draining the lines stops the burst point from continuing to push water out of the break.
Protect what the water is reaching
Move furniture, rugs, and electronics out of the path. If water is near outlets, appliances, or the breaker panel, stay clear, shut off power only if you can reach the panel safely and dry.
Call for the repair, and for drying
A plumber fixes the pipe. If flooring, drywall, or ceilings got soaked, a water mitigation company with fans and dehumidifiers is what prevents mold, and your insurer will want photos of everything before cleanup.
Why pipes burst in the first place
In Central Texas the usual culprits are freeze events, water pressure that’s crept too high, corroded or aging pipe, and mechanical damage, a nail from a picture-hanging project can weep for years before it lets go. Freezes are the big one: water expands as it freezes and splits the pipe, but the flood often starts hours later when things thaw.
That’s why a burst pipe deserves a diagnosis, not just a patch. If pressure or pipe condition caused this one, the next weak point is already waiting.
While you wait for the plumber
Photograph everything before you clean up, the break, the water, the damage. Insurance claims go far smoother with pictures. Then get air moving: open cabinets, run fans, and pull wet rugs off wood floors. The faster things dry in the first 24 hours, the smaller the restoration bill.
“Find your main shutoff today, while nothing is wrong. In a burst-pipe emergency, that knowledge is worth more than any tool you own.”
The bottom line
A burst pipe is one of the few true plumbing emergencies. Shut off the main, drain the pressure, document the damage, and get the line repaired the same day, then ask the plumber why it burst, so it doesn’t happen again next winter.