Meter test
Turn off every faucet and appliance. If the meter dial or leak indicator still moves, water is leaking.
Slab leak suspected under the floor?
A slab leak is a water line leaking under a concrete floor. Signs are warm spots on the floor, the water meter moving with everything off, or a sudden jump in the water bill. Call 833-877-1717. RepairNowUSA connects the request. An independent plumber with leak-detection equipment does the work.
Am I in the right place?Yes for warm or damp floor spots, cracks with moisture, the sound of running water with everything off, or an unexplained high water bill.
Is this urgent?Urgent if water is coming up through the floor or flooring is buckling.
What do I do next?Do the meter test below, then call 833-877-1717 with the ZIP code.
Leak in the yard or before the building: main water line repair. Water already on floors: water damage restoration.
RepairNowUSA editorial review · Last substantively reviewed October 13, 2026 · Review standards
Simple checks
Feel the floor
A warm spot can mean a hot-water line is leaking under it.
Shut off if needed
If water is coming up through the floor, close the main water valve.
Do not start breaking concrete
Finding the exact spot takes listening and thermal equipment. Opening the slab in the wrong place adds cost and damage. Let the plumber locate it first.
Slab leak repair options
Spot repair
Opening the floor at the leak and repairing that section.
Reroute
Running a new line through walls or the attic and abandoning the leaking one.
Repipe
Replacing aging lines when several leaks have occurred.
Drying and flooring
Wet flooring and baseboards may need drying or replacement afterward.
What to have ready when you call
- Property ZIP code, home or business
- Warm spots, damp areas or cracks
- Whether the meter moves with water off
- Recent water bills
- Floor type over the area
- Age of the building
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles slab leak detection and repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Slab leak questions
What are signs of a slab leak?
Warm or damp floor areas, the sound of running water, cracks in flooring, a moving water meter with everything off, or a sudden increase in the water bill.
How is a slab leak found?
Plumbers use pressure tests, listening equipment and thermal imaging to pinpoint the leak before opening anything.
Can I call about a slab leak at night?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Is rerouting better than breaking the slab?
It depends on the location, pipe condition and floor. The plumber explains the options and prices.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.