Inside the City of Marietta, Marietta Water provides both water and sewer collection, so a sewer line replacement means new pipe for the private lateral from your house to the city's sewer. Homes with a Marietta address outside city limits may be on Cobb County Water System instead, so confirm your provider by address. Call the number on this page to be connected with a local plumber in Marietta.

Marietta's sewer and its older neighborhoods
Marietta Water, part of Marietta Power & Water, handles wastewater collection inside the city, and its 24-hour service and maintenance dispatch is (770) 794-5230. That's the number for a sewer problem in the street. Plenty of homes carry a Marietta mailing address without being in the city, though, and those may be Cobb County Water System customers. Your bill shows which.
The city is one of the metro's largest suburbs, built around the historic Marietta Square. The median home dates to 1987 and about 33.2% were built before 1980, according to ACS 2019-2023 estimates. Older streets near the Square are where clay and cast iron laterals are likeliest; much of the rest is newer plastic, which fails from settling or digging damage rather than age.
| Choice | Suits | Drawback |
|---|---|---|
| Spot repair | One root intrusion or crack on solid pipe | Older pipe on both sides remains |
| Lining | Cracked but round, well-sloped pipe | No help for sags or collapses |
| Pipe bursting | Old route still usable | Pits needed at both ends |
| Open trench | Sags, collapses or a new route | Most yard restoration |
Signs to watch
- A clog that returns soon after professional clearing
- Several fixtures draining slowly together
- Sewer odor in the yard or crawl space
- A patch of lawn that stays green or damp over the line
- Root cutting needed every year or two
Any of these alone can be a simple clog. Two or more together, in a house that predates the 1980s, usually means the camera will show damage at several points. In that case, paying for repeated clearing tends to cost more over a few years than replacing the line.
Timing and permits
Marietta's Building Inspections office issues permits for changes to existing buildings, and plumbing is among its most requested permit types. Outside city limits, the permit office will differ, so the plumber should confirm jurisdiction before filing. If a camera run already shows a failing line, scheduling the replacement before it backs up again gives you room to weigh trenchless against a trench, and to decide whether worn interior pipe should be replaced in the same job.
Sewer Line Replacement questions in Marietta
My mailing address names this city, but I live outside its limits. What changes?
When sewage backs up, should I call the utility or a plumber first?
What are older sewer laterals around here usually made of?
Why does the plumber want a camera inspection before quoting?
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