Most slab leaks are slow. Some are not: water pushing up through tile grout, carpet soaked at the edge of a room, or pressure dropping at every tap at once. When that happens, what you do in the first few minutes limits the damage.
Step 1: Shut off the water
- Main shutoff at the house. Often in the garage, a utility closet, or where the line enters the house.
- Valve at the meter box. Near the road; a meter key or adjustable wrench turns it.
- On a well: switch off the well pump at its breaker.
Shutting off the water stops the leak feeding the slab and the soil underneath.
Step 2: Protect the house
- Turn off power to any area where water is near outlets or appliances.
- Move rugs, furniture and belongings off wet flooring.
- Take photos and video of the water before cleaning up, for insurance.
Step 3: Call
Describe what you're seeing: where the water is, whether the floor is warm, whether pressure dropped. The plumber confirms the leak is under the slab and locates it with slab leak detection.
Getting water back
In many homes the leaking line can be isolated so the rest of the house runs again: a bathroom and the kitchen back in use while the repair is planned. A temporary bypass can bridge the gap if the permanent fix will take longer.
The permanent fix
Once the emergency is under control, it's the same choice as any slab leak: repair at the spot through a small opening, or reroute the line above the slab. If the burst was on a hot line, see hot water line slab leak repair.
If water has spread
If water has soaked drywall, cabinets or flooring, the plumber can tell you when it's worth bringing in a separate drying company. Drying quickly matters in our humid climate.
Shut the water off, then call about [slab leak repair](/).
Emergency Slab Leak Repair Services We Offer
✓Line Isolation
Shuts off the leaking line so the rest of the house can run.
✓Same-visit Locate
Leak location as part of the emergency call where possible.
✓Temporary Bypass
Keeps a kitchen or bathroom running until the permanent repair.
How it works
- 1
Shut off
Main valve, meter valve, or well pump.
- 2
Isolate
Leaking line isolated so the rest of the house can run.
- 3
Locate
Leak pinpointed under the slab.
- 4
Plan the repair
Spot repair or reroute chosen.