Leak Detection in Durham, NC

Three checks to run first

1. Meter test. Turn off every fixture, the ice maker and any irrigation. Note the meter reading and the low-flow indicator if it has one, avoid using water for an hour or two, then look again. Any change means water is leaving the system.
2. Inside or outside. Close the main shutoff at the house and recheck. If the meter still creeps, the leak may be on the buried line between the meter and the house, or the shutoff isn't closing fully.
3. Toilet dye test. Put food coloring in each tank and wait without flushing. Color in the bowl means a worn flapper or fill valve, one of the most common silent leaks.

Where the signs point

• A warm spot on a floor: possibly a hot water line under the slab
• Ceiling stains or soft drywall: a supply or drain pipe above
• A wet strip of yard in dry weather: the water service line
• Hissing in a wall with nothing running: a pressurized pipe behind it
• Pressure that has dropped for no clear reason: a leak somewhere on the supply side

How plumbers narrow it down

Acoustic equipment picks up the sound of water escaping under floors or soil. Thermal imaging shows warm streaks from leaking hot lines. Isolating sections and pressure testing them shows which run is losing water, and moisture meters show how far it has spread. Pipe tracers follow buried lines so a yard is opened in one place, not several.

Durham details that matter

The City of Durham's 2024 water quality report says Durham Water typically owns the service line on the water-main side and the owner owns the building-side plumbing, without spelling out the exact point. If a leak looks like it's at the meter or in the street, contact the City before hiring anyone for that section. The same report notes homes built before 1988 may have a lead service line; if a leak is on that line, ask the plumber to identify the pipe material.

The City has also imposed water-use restrictions during drought. Check the City's current status, and remember that a hidden leak wastes water whatever stage is in effect.

What affects the cost

The number of methods needed, whether the leak sits under concrete, behind finished walls or underground, and access to the area all affect price. Finding a leak and fixing it are often quoted separately.