Sewer Line Leak Detection & Repair

Sewer line leaks are among the most damaging and least visible failures in a Smyrna home. The lateral that runs from your house to the City of Smyrna Water and Sewer Division's main line sits 3 to 8 feet underground, and a slow leak can saturate the soil around your foundation for months before it surfaces as a soggy yard, slow drain, or sewage odor. In Smyrna's older neighborhoods, cast-iron lateral pipe from the 1940s, 1950s, and 1960s is common in Downtown Smyrna, Belmont Hills, and parts of Smyrna Heights. That pipe has a realistic service life of 50 to 75 years, meaning much of it is in or past its failure window.

Smyrna operates approximately 140 miles of sewer lines through the Water and Sewer Division. Homeowner responsibility typically extends from the house to the connection point at the main, which means a cracked or root-infiltrated lateral is the homeowner's repair. Knowing exactly where the break is and how extensive it is before starting excavation saves significant money and yard disruption. Trenchless repair is often available when the damage is localized.

Signs of a Sewer Line Leak in Smyrna

• A persistently soggy or green patch in the yard above the lateral line, even during dry weather
• Sewage odor in the yard, basement, or crawlspace, especially after rain saturates the ground
• Slow drains throughout the house, not just one fixture, which points to a main lateral problem rather than a localized clog
• Gurgling sounds from multiple drains when one fixture is used
• Visible sinkholes or depressions along the path of the sewer lateral
• Higher-than-normal mosquito or pest activity in a localized yard area, which can indicate a saturated sewage leak zone

Camera Inspection: Finding the Break Without Digging

The first step in any sewer line investigation is a camera inspection. We run a waterproof camera through the drain system from a cleanout or pulled fixture to visually identify the condition of the lateral from the house to the street connection. The camera locator pinpoints the depth and ground position of any obstruction, crack, root infiltration, or pipe collapse, so we know exactly where to dig or where to start a trenchless liner before any excavation begins.

In Smyrna's older neighborhoods, cast-iron laterals often show corrosion from the inside out. The sulfuric acid produced by hydrogen sulfide gas in the drain corrodes the crown of a cast-iron pipe before any structural cracking from soil movement occurs. Camera inspection reveals this early-stage internal corrosion before the pipe fails completely.

For newer PVC laterals in the Wynfield, Brookhaven Smyrna, and Concord Place developments, root infiltration at the joint couplings is the more common finding. Oak and pine roots in Georgia red clay soil are aggressive, and a joint gap of even a few millimeters provides enough moisture signal to attract a root tip.

Trenchless Sewer Repair Options in Cobb County

When the damage is localized and the remaining pipe structure is sound enough to support lining, trenchless repair is significantly less disruptive and typically less expensive than full excavation:

• Cured-in-place pipe lining (CIPP): A flexible liner saturated with epoxy resin is inserted and inflated against the interior of the damaged pipe. When it cures, it creates a new smooth-walled pipe inside the old one. Effective for corrosion, small cracks, and root infiltration.
• Pipe bursting: A bursting head pulls a new pipe through the old one, fracturing the old pipe outward as it goes. Used when the old pipe is too damaged for lining but the soil conditions allow trenchless replacement.

When the damage is extensive, the pipe alignment has shifted, or the pipe has partially collapsed, open excavation and replacement is the correct approach. We give you a clear assessment with both options and their costs before you commit to either.

Smyrna Drain and Sewer System Context

The City of Smyrna Water and Sewer Division maintains the public sewer system. Regional wastewater treatment runs through the Cobb County Water System. Your lateral connects to the public main at the property line or street right-of-way. Any failure on the private side of that connection is the homeowner's responsibility. We coordinate with the City when there is a question about whether a problem originates at the public main or on the private lateral.

Adjacent communities including Marietta and Mableton operate their own utility systems. We cover all of them and handle the coordination with each respective utility when needed.

Frequently Asked Questions