DeKalb County Watershed Management provides sewer in Lithonia, while the small City of Lithonia issues its own plumbing permits for addresses inside city limits. The private pipe from your house to the county sewer is what a plumber repairs. Call the number on this page to be connected with a local plumber in Lithonia.

Who handles the sewer in Lithonia?
DeKalb County. The City of Lithonia doesn't list a utility of its own, and DeKalb Watershed handles water mains and service in town; it operates the county wastewater system, including the Pole Bridge and Snapfinger plants, though which plant serves Lithonia isn't confirmed. For a break, overflow or blockage in the public system, DeKalb's 24-hour emergency repair line is 770-270-6243. If only your home is backing up, the trouble is most likely in your own building sewer, which is a job for a plumber.
Am I actually in the City of Lithonia?
Possibly not. Lithonia is a small historic granite-quarrying town, the City of Granite, with a Main Street core ringed by older residential streets. But the Lithonia mailing area, ZIPs 30038 and 30058, is far larger than the city and overlaps Stonecrest and unincorporated DeKalb. Sewer is DeKalb's throughout, but permits differ. Inside city limits, the city's Building and Permitting Division on Main Street issues plumbing permits as a trade permit type, with applications through its Citizen Portal. Addresses outside the limits go to the City of Stonecrest or DeKalb County instead.
What's typical for sewer lines here?
Housing data is only available for the much larger 30058 ZIP, where about 16% of houses predate 1980, so it says little about the older streets around the historic district. Homes near Main Street are more likely to have cast iron or clay laterals with cracked joints and roots, while newer subdivisions in the wider mailing area mostly have PVC, where settling and digging damage are more common. A camera inspection is the only reliable way to know what's under your yard. Warning signs include tubs that fill when a toilet flushes, gurgling during laundry and recurring clogs.
A local note
Before any sewer work, confirm whether your address is in the City of Lithonia, Stonecrest or unincorporated DeKalb. Your property tax bill shows it, and the answer decides which office issues the permit. Then stop running water, find the cleanout near the foundation and note which drain backed up first. Older houses near the historic district may not have an outdoor cleanout at all, and a plumber can add one during the repair so the line is easier to clear and inspect in the future.
Sewer Line Repair questions in Lithonia
My mailing address names this town, but I live outside city limits. Who handles my sewer?
Does sewer line work need a permit here?
Who do I call if the backup might be in the public sewer main?
How can I tell a main sewer line problem from one clogged drain?
More plumbing services in Lithonia
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