7 Warning Signs of a Slab Leak Every North Texas Homeowner Should Know

Most homes in Dallas–Fort Worth sit on concrete slab foundations with water lines running underneath. When the region’s expansive clay soil swells after heavy rain and shrinks during drought, those pipes are put under stress. Combined with age and water chemistry, that makes slab leaks one of the most common plumbing repairs in North Texas.

1. A water bill that suddenly jumps

If your usage has not changed but your bill has, a hidden leak is the first thing to rule out. Turn off every faucet and appliance and watch your water meter for 15 to 30 minutes. Any movement means water is escaping.

2. Warm spots on the floor

A leak in a hot-water line under the slab warms the concrete above it. You may feel it on tile or notice pets lying in the same spot.

3. The sound of running water

Hearing water when nothing is running often means a pressurized line is leaking inside a wall or under the floor.

4. Cracks in flooring or walls

Water eroding or swelling the soil under a slab can contribute to new cracks in tile, drywall and baseboards.

5. Damp carpet or musty smells

Moisture wicking up through the slab can leave carpet damp or produce a musty odor with no visible source.

6. Low water pressure

A significant leak reduces the pressure available at your fixtures, especially when more than one is running.

7. A water heater that never stops running

If a hot-water line is leaking, your water heater keeps refilling and reheating, which you may hear or see in higher gas or electric bills.

What to do if you suspect a slab leak

Call a plumber who offers electronic leak detection. Pinpointing the leak first means the repair can be targeted, and you can compare a spot repair, a reroute through the walls or attic, or a full repipe before deciding. Acting quickly limits damage to your flooring and foundation.