Leak Detection & Repair in Atlanta

Acoustic detection listens to the sound of water spraying from a hole under pressure. A plumber uses a listening device (sometimes called a water leak detector) or a sensitive amplifier to pick up the distinctive hiss or noise where water escapes. Outdoor leaks in yard lines or slab leaks near the surface are often found this way. The plumber walks or crawls through the house, listening at walls, under cabinets and in crawl spaces, then narrows the leak to a small zone.

Thermal imaging shows the temperature difference between the leaking water and the surrounding material. A pipe with an active leak cools or warms the area around it; the camera displays that zone in a different color. This method works especially well for leaks in exterior walls or under a slab where the leak is not deep. Once the acoustic and thermal searches converge on one spot, the plumber marks it—often with paint or chalk—so the repair crew knows exactly where to open access.

Tracer gas (a harmless, odorless, non-toxic gas) is sometimes used for drain leaks or leaks in difficult-to-reach places. The gas escapes from the leak and is detected above ground, revealing the leak's path even through soil or inside walls. Atlanta plumbers use tracer gas when acoustic methods alone are inconclusive, especially for slow leaks that produce little sound.

After the leak is located, the plumber pressure-tests the system again to confirm the repair succeeded. A written report documents the method used, the location, photos or thermal images, the repair performed and the post-repair pressure. This record is invaluable for insurance claims and home sales.

Atlanta's water hardness and mineral content vary by neighborhood and source (some areas draw from surface water, others from groundwater). Hard water—above 7 grains per gallon (gpg)—deposits scale inside copper and steel pipes over time. This mineral crust weakens the pipe wall, and pinhole leaks develop from the inside out. Water softeners reduce scale and extend the life of pipes and water heaters, but many Atlanta homes lack one.

Homes built before 1980 often have galvanized steel supply lines. Galvanized pipes corrode from the inside, especially in hard-water areas, and their lifespan is typically 40–60 years. Atlanta has a large inventory of mid-century homes in neighborhoods like Druid Hills, Virginia-Highland and East Atlanta that rely on aging galvanized or cast-iron lines. Polybutylene (PB) plastic pipe, common in 1980s–1990s builds, is also prone to failure from chlorine exposure and UV damage.

Georgia's freeze-thaw cycle, while mild compared to the North, creates risk in uninsulated spaces. Atlanta averages 2–4 freeze days per year, and temperatures dip below 32°F on winter nights. Water lines in attics, crawl spaces and exterior walls can freeze and crack if not insulated. When the ice melts, the crack opens and leaks begin. This risk is highest in homes with poor attic ventilation or unheated additions.

Slab leaks are another Atlanta hazard. Older slab homes in established neighborhoods were often built with copper or galvanized supply lines run directly under the concrete. No insulation or protection means the line is exposed to soil chemicals, shifting foundation movement and corrosion from the ground. A pinhole leak under a slab can run for months before a homeowner notices a spike in the water bill or soft flooring.

Combination of age, hard water, freeze risk and poor maintenance means Atlanta homeowners should have their water supply system inspected every 5 years if the home is over 40 years old. Early detection of corrosion, scale or pin leaks saves thousands in water damage.