Decatur has some of the oldest housing near Atlanta, with more than half of homes built before 1980 and nearly a quarter from 1939 or earlier, so clay and cast iron sewer laterals are common. DeKalb County Watershed Management works on the public sewer lines, and the city requires a separate sewer permit for any sewer work. Call the number on this page to be connected with a local plumber in Decatur.

Why do so many Decatur homes need sewer work?
Age. Decatur is the DeKalb County seat, incorporated in 1823, and close-in neighborhoods like Oakhurst are full of early 20th-century houses. The median home dates to about 1975, roughly 54% were built before 1980, and about 23% were built in 1939 or earlier. Houses of that vintage commonly have clay tile laterals, sometimes with cast iron inside the foundation. Clay joints loosen and admit roots from the big hardwoods that shade these streets, while cast iron corrodes from the inside. Many of these lines have been patched more than once over the decades.
Typical signs are a basement drain or lowest tub backing up when toilets flush, gurgling during laundry, and clogs that return every few months.
Who handles the public sewer in Decatur?
The city's water link points to DeKalb County Watershed Management, and city commission records describe DeKalb replacing a sanitary sewer line in Decatur. Ownership of every local collection line isn't spelled out, so for a problem at the street, contact the City of Decatur or DeKalb Watershed; DeKalb's 24-hour emergency repair line is 770-270-6243. The pipe on your lot remains a private plumber's job.
What permits does Decatur require?
The city's Design, Environment & Construction Division requires a separate trade permit for sewer, drainage, plumbing and gas work regardless of the job's value, and all applications go through the Community Core online portal. That rule only applies inside city limits. Decatur-mailing ZIPs reach well into unincorporated DeKalb, and those addresses are permitted by DeKalb County instead.
A local note
On older Decatur lots, the lateral may run under a front walk, porch steps or a mature tree. A camera inspection before any digging shows the route and depth, which often makes lining a better fit than excavation. It also shows whether earlier owners patched the line with a different material, something common in houses that have changed hands many times. If the footage reveals several weak joints, ask the plumber to compare the cost of repeated spot repairs with lining or replacing the whole run, since in a century-old lateral the next joint is often not far behind.
Sewer Line Repair questions in Decatur
Does sewer line work need a permit here?
What is the sewer pipe under a house this age likely made of?
My mailing address names this town, but I live outside city limits. Who handles my sewer?
Should I have the sewer line checked before buying an older home here?
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