Finding the actual break
Water travels along joists and under flooring, so the wet patch is rarely above the split. The line is isolated and tested section by section rather than opening the first damp wall.
A split pipe can soak flooring and drywall in minutes. Shut the water off at the meter box if you can reach it safely, keep away from wet floors near outlets, and call San Antonio 24 Hour Plumber — we find the break, stop it and price the repair before starting.
If water is coming out faster than you can mop it, the shutoff comes first and the diagnosis second. In most San Antonio homes the main valve sits inside the water meter box at the curb, under a rectangular lid. Open it, look for the valve next to the meter and turn it a quarter turn so the handle sits across the pipe. Many houses also have a second shutoff where the supply line enters near an outside faucet.

Not every call needs everything below. San Antonio 24 Hour Plumber separates the repair that stops the water from the work you may want to plan for later, and both appear on the quote.
Water travels along joists and under flooring, so the wet patch is rarely above the split. The line is isolated and tested section by section rather than opening the first damp wall.
The failed section is cut out and replaced with pipe that matches the rest of the system. Copper, galvanized and PEX all need different fittings, and mixing metals badly is how the next leak starts.
One pipe splitting after a hard freeze is bad luck. Three splitting means the run is unprotected. Corroded galvanized pipe that has failed once usually fails again nearby, so the rest of the run gets inspected too.
A quote should name the pipe that failed, the length being replaced and anything related that was found along the way — a corroded valve, a fitting that is weeping, insulation missing from an attic run. If the same run has failed before, ask whether replacing the whole section now is the cheaper end of the decision.
The February 2021 freeze is still the reference point for most people in San Antonio, and it taught the area a lasting lesson: the pipes that burst were mostly the exposed ones — attic runs, garage walls, outdoor hose bibs and irrigation backflow preventers. Those are worth insulating before the next hard freeze rather than after it.
If the water is appearing but you cannot see where from, leak detection comes before any repair. When the leak is in the supply line below the foundation, that is slab leak repair and works differently. Our step-by-step guide to what to do when a pipe bursts covers the first ten minutes.
Emergency calls cover San Antonio and nearby communities including Stone Oak. If you are outside that area, check the full service area list.
Three things: where the pipe is, what it is made of and how much has to be opened to reach it. A split under a sink is straightforward; the same split inside a wall or an attic run adds access work. San Antonio 24 Hour Plumber quotes the repair after finding the break, not over the phone.
Usually, yes. Most supply line breaks are stopped and repaired on the first visit because the materials are standard. A break in a buried line or one that needs a fixture removed can take longer, and San Antonio 24 Hour Plumber will say so once the pipe is visible.
Shut off the water at the meter box or house valve, then open the lowest faucet in the house to drain the pressure out of the lines. Move belongings off wet flooring. Stay away from standing water anywhere near outlets, appliances or a breaker panel, and do not touch the water heater if the area around it is flooded.
If the whole house supply is off, yes — a tank heater should not sit running with no water feeding it. Switch off the breaker for an electric unit, or turn a gas unit's control to the pilot or off setting, but only if you can reach it safely and dryly. If you are unsure, leave it and tell San Antonio 24 Hour Plumber when you call.
Tell us what the water is doing and we will plan the right visit.