In Clemmons, a slab leak is a pressurized water line leaking under a concrete floor, and many of the village's 1990s and 2000s homes are now old enough for buried copper to start wearing. A plumber confirms the leak, finds it and repairs it through the slab or with a new line above the floor. Call the number on this page to be connected with a local plumber in Clemmons.
Clemmons in brief
Clemmons grew from about 6,000 people in 1990 to more than 21,000 in 2020, and much of its housing came with that growth. Census survey data puts the median home at 1994, with about 29% built before 1980. Water comes from Winston-Salem/Forsyth County Utilities, whose 2025 report shows soft, chlorinated water and lead and copper not detected at the 90th percentile, so the water itself isn't a known cause of pipe wear. The utility doesn't publish where its side of the service line ends. A hidden leak under a slab often shows up first as a slow climb on the bill, so a quick meter check is the place to start.
What to do now
- Stop all water use. Turn off faucets, the dishwasher, the washer and any irrigation zones.
- Read the meter twice. Write down the reading, wait an hour with nothing running and look again.
- Split inside from outside. Close the main shutoff at the house. If the meter stops, the leak is indoors; if it keeps moving, suspect the yard line.
- Check the water heater side. Close the cold inlet valve on the heater. If the meter then stops, the leak is likely on the hot side.
- Protect the house. If water is showing, leave the main closed, move rugs and furniture, and call.
Symptoms and what they usually mean
| Symptom | Likely cause |
|---|---|
| Meter moves with the main open, stops with it closed | Leak inside the house, possibly under the slab |
| Warm strip of floor near the kitchen or a bath | Hot-water line leaking below the concrete |
| Wet ground near the foundation in a dry week | Service line leak between meter and house |
| Water heater running far more than usual | Hot water draining away through a leak |
| Dye shows up in the toilet bowl without flushing | Flapper leak, not a slab leak |
What affects the cost
- How long it takes to isolate and locate the leak
- Spot repair through the concrete or a reroute through walls and the attic
- Flooring to be opened and replaced, from tile to engineered wood
- Drying and repair of wet drywall, baseboards or cabinets
- A permit, if one is required, through the joint Winston-Salem/Forsyth County Inspections Division, which serves Clemmons
Slab Leak Repair questions in Clemmons
Who handles permits for slab leak repair here?
Why does one part of my floor feel warm?
How does a plumber find a leak under concrete without guessing?
Could a leak under the slab explain weak water pressure?
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