Lithonia homes get water from DeKalb County Watershed Management, which is responsible only up to the meter. The Lithonia mailing area is much larger than the small city, so permits depend on whether the address is in the city, Stonecrest or unincorporated DeKalb. Call the number on this page to be connected with a local plumber in Lithonia.

Who owns the pipe under my house?
You do, from the meter in. DeKalb County Watershed Management handles water mains and service in Lithonia; the city lists no water utility of its own. DeKalb is responsible for the service line from the main in the street to the meter, including the meter. The property owner is responsible from the meter to the home's plumbing. Water main breaks in Lithonia go to DeKalb's 24-hour emergency repair line. A leak under your slab is a plumbing repair.
Which permit office covers my address?
It depends on where you are. The City of Lithonia is small, and its Building and Permitting Division at City Hall on Main Street issues plumbing permits as their own trade permit type, applied for through the city's Citizen Portal. But the Lithonia mailing area overlaps Stonecrest and unincorporated DeKalb. Addresses outside city limits go to the City of Stonecrest or DeKalb County instead. Check before the plumber files anything.
How old are homes in the Lithonia area?
The historic city, known as the "City of Granite," has a Main Street core ringed by older residential streets. Housing figures are only available for the much larger ZIP 30058, where about 16% of houses were built before 1980. So most homes in the wider area are newer. In older homes near Main Street, aging copper under a slab is a real possibility; in newer subdivisions, leaks usually start at fittings or construction damage.
DeKalb's service line inventory lets customers check their line material, and its 2026 report advises extra flushing for homes with lead or galvanized service lines.
A Lithonia note
Before calling, run a meter test with every fixture off. If the meter moves and toilets pass a food-coloring test, a slab leak is worth checking. Know whether your address is inside city limits so the right permit office is used.
On repair choices: if the home is older and the buried copper is original, ask about rerouting the supply through walls or the attic rather than repairing one spot. In a newer home, a direct repair at a single bad joint is often enough. Either way, the plumber should confirm the leak location before any concrete is opened, and you should hear both options before deciding.
Slab Leak Repair questions in Lithonia
Who is responsible for a leak between the meter and the house?
Is a permit needed for slab leak work here?
How do I find out which utility supplies my water?
My water bill jumped and nothing looks wet. What should I check?
More plumbing services in Lithonia
Slab Leak Repair nearby
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