Slab Water Leak Detection for Florence, AZ Homes

No single sign is proof, but several together are a strong clue.

• A warm or hot spot on the floor, especially in a bare room.
• A water bill that rises with no change in habits.
• The sound of running water when everything is off.
• A wet or musty patch on carpet or flooring.
• Low water pressure at some taps.
• A water meter that moves when all water use is stopped.

Turn off every tap and appliance. Read the meter, wait two hours with no use and read it again. A change means water is leaking somewhere on your side of the meter. Close the main valve and watch the meter again. If it stops moving, the leak is inside the house. If it keeps moving, the leak is between the meter and the house.

This test separates a slab leak from a toilet that runs silently. Check the toilets with a few drops of food coloring in each tank. If color shows in the bowl after ten minutes, that toilet leaks.

Each tool answers a different question.

A good plumber combines two or more tools before cutting concrete, because a wrong guess costs time and money.

Detection ends with a location and a recommendation. The leak may be at a single joint, along a stretch of pipe or in a line that is failing throughout.

A single failure can be repaired in place. Repeated failures suggest rerouting the line through the attic or walls, which avoids the slab entirely. Our slab leak repair page describes those options, and the general method is covered under leak detection.

If you suspect a slab leak, you can limit damage without waiting for a visit.

• Shut off the main water valve if a bill spike or sound suggests a large leak.
• Turn down the water heater if the leak is on a hot line.
• Move rugs, boxes and furniture off the affected floor.
• Take photos of any damp spots and the meter readings.
• Call your insurance agent before you arrange repairs.

The type of pipe that leaks changes how it shows up. A hot line leak warms the floor and is easier to see with thermal imaging. A cold line leak is cooler and quieter.

Hot water lines tend to fail sooner because heat speeds corrosion. A hot line leak also makes the water heater run more, which can raise your gas or electric bill along with your water bill. Check whether the heater seems to cycle often even when little hot water is used.

Detection is a skill, and results vary with the operator. Ask these questions before you book.

1. 1Ask which tools they use.A good company uses more than one method and cross-checks.
2. 2Ask what you receive.A written finding with a marked location and photos is useful for repairs and insurance.
3. 3Ask about access damage.Detection should not require opening the slab.
4. 4Ask what happens next.The company should explain repair options without pressure.

Cheap detection that guesses wrong costs more than careful detection that finds the leak the first time.

Water under a slab can soften soil, lift flooring and feed mold. The longer it runs, the more it costs. Detection is cheap compared with the damage that a long-running leak causes.

Check your meter after any vacation, and read your bill each month. A small, steady rise is easy to miss. Catching it in the first month turns a large repair into a small one.