A collapsed sewer line in Marietta, Georgia shows up as three things at once: sewage standing in the yard, a sunken strip of ground running between the house and the street, and every drain in the house backing up within minutes of each other. If you have two of those three, the pipe under your lawn is almost certainly broken, and no amount of plunging or drain cleaner will fix it. Below we walk through the signs in the order they usually appear, what a collapse looks like on camera, what repair costs in 2026, and how to tell a true collapse from a bad clog.
What a collapsed sewer line actually looks like underground
A collapsed sewer line is a broken underground pipe that has lost its shape, so wastewater has nowhere to go but up into your yard or back into your basement. The pipe does not have to be shattered into pieces to be collapsed - most of the collapses we dig up in Marietta are pipes that sagged, cracked at a joint, and then filled with soil until the opening closed to the size of a pencil.
Three things cause almost every collapse we see: age, tree roots, and ground movement. Clay tile laid in the 1950s and 1960s gets brittle and shifts at the joints. Orangeburg pipe, which is tar paper pressed into a tube, deforms under load and eventually flattens like a straw. Cast iron from the same era rusts from the inside out until the bottom of the pipe is gone and only the top of the crown is left holding the trench open.
On camera, a collapse looks like a dark wall of dirt blocking the line, or a section where the pipe outline suddenly disappears and the camera is staring at mud. A sagging line looks different - the camera dips, water pools in the belly, and debris sits in the low spot. Both need repair, but they need different repairs, which is why we never quote a collapsed sewer line repair in Marietta, Georgia without running a camera first.
The warning signs homeowners in Marietta notice first
Collapsed sewer line symptoms in Marietta GA almost always start indoors and move outside within a week or two. The order matters, because the earlier you catch it, the smaller the excavation.
- Every drain backs up at once. A single slow sink is a local clog. A toilet, a shower, and a washing machine all gurgling together means the main line is blocked or broken.
- Water rises in the lowest fixture first. In most Marietta homes that is the basement floor drain or the first-floor tub. When you run the washing machine and the tub fills with gray water, the main line is not draining.
- Gurgling and bubbling. Air trapped behind a partial blockage pushes back through traps. You hear it before you see it.
- Sewer smell inside the house. A cracked or collapsed pipe lets methane and hydrogen sulfide escape into the soil and up through foundation gaps.
- Repeated clogs in the same spot. If we clear the same line twice in six months, something structural is wrong down there.
If you are seeing two or more of those, stop running water and get the line scoped. Continuing to flush pushes more solids into the break and turns a spot repair into a full run replacement.
Sunken ground over the sewer line in Marietta, Georgia
Sunken ground over a sewer line in Marietta, Georgia is the single most reliable outdoor sign of a collapse. When the pipe fails, the soil above it washes into the void, and the lawn settles into a long shallow trench that follows the pipe run from the house toward the street or the septic tank.
What to look for:
- A strip of grass that is greener than the rest of the yard, even in a dry October like this one.
- A depression 4 to 12 inches deep and 12 to 24 inches wide, usually straight rather than round.
- Soft, spongy ground that squishes when you walk on it after a rain.
- Sewage standing in the yard, especially near the cleanout or the lowest point of the lawn.
- Pavement or a driveway slab that has cracked or dropped along a straight line.
Sewage pooling in your yard in Marietta GA is a health issue, not just a landscaping one. Raw wastewater carries bacteria and parasites, and it will keep surfacing until the pipe is repaired. Keep kids and pets away from the area and call us the same day.
If you are not sure where the line actually runs, our sewer line locating in Marietta, Georgia service marks the pipe before anyone puts a shovel in the ground. That step alone saves most homeowners a torn-up flower bed.
How do you know if your sewer line is broken in Marietta, GA?
You know your sewer line is broken in Marietta, GA when a camera pushed through the cleanout shows a physical defect - a crack, an offset joint, a root mass, or a section of missing pipe - rather than a soft blockage of grease or paper. That is the only way to tell a broken sewer line from a stubborn clog, and it takes about 30 minutes.
We run a sewer camera inspection in Marietta, Georgia on every line we are asked to quote. The camera records the whole run, we mark the depth of the defect on the recording, and you watch it on the monitor with us. No guessing, no "it might be roots."
Here is the practical difference between the two problems:
- Clog: water drains slowly but eventually clears. Camera shows debris sitting in an otherwise intact pipe.
- Collapse: water does not clear at all, or it comes back up. Camera shows dirt entering the pipe, a flattened section, or a joint that has dropped out of alignment.
One test you can do yourself: fill a bathtub, then pull the plug and watch the toilet in the next room. If the toilet gurgles or the water level rises, the blockage is in the main line, not the branch. If nothing happens, the problem is closer to that fixture.
Why Marietta's older neighborhoods collapse more often
Marietta's housing stock is the reason we see more collapsed sewer pipe repair calls here than in newer suburbs. Homes built before 1975 were plumbed with materials that have a predictable service life, and many of them are now past it.
Clay tile was the standard from the 1920s through the 1970s. It handles waste water fine, but the joints are mortared, and tree roots find those joints within a few years. Once roots get in, they widen the gap, soil washes in, and the pipe sags. We handle that with sewer line tree root removal in Marietta, Georgia when the pipe is still structurally sound, and with replacement when it is not.
Cast iron was used for the same period. It rusts from the inside, and by the time you see the orange staining in the basement, the pipe wall may be down to a fraction of its original thickness. A camera will show the pitting before the pipe actually fails.
Orangeburg pipe is the worst of the three. It was used heavily in post-war subdivisions, it deforms under soil load, and it has no realistic repair - it has to come out. If your home was built between roughly 1945 and 1972 and still has the original lateral, there is a good chance you are looking at Orangeburg.
Neighborhoods matter here too. In Historic Marietta, the combination of mature trees, original clay laterals, and small lots means root intrusion and joint failures are routine. We see the same pattern in Downtown Marietta, where commercial buildings and older homes share lines that were never sized for modern use.
What collapsed sewer line repair costs in Marietta in 2026
Typical 2026 pricing in this area runs from about $1,200 for a spot repair on an accessible line up to $12,000 or more for a full lateral replacement under a driveway or mature landscaping. The spread is wide because the pipe is only part of the job - access is the rest.
Rough ranges we quote:
- Camera inspection and locating: $250-$450, credited toward the repair if you hire us.
- Spot repair (one section, open lawn): $1,200-$3,500.
- Trenchless pipe lining or bursting: $4,000-$9,000 depending on length and material.
- Full conventional replacement, 40-60 feet: $6,000-$12,000.
- Replacement under a driveway or slab: add $2,000-$5,000 for concrete removal and pour-back.
Two things move the number more than anything else: depth and access. A line 3 feet down in open lawn is a straightforward dig. A line 8 feet down under a 60-year-old oak is a different project.
If the pipe is still intact and only sagging, sagging sewer line repair in Marietta, Georgia is often a fraction of replacement cost. If it is genuinely collapsed, though, patching does not work - the pipe has lost its shape and will fail again within a year.
What to watch out for before you hire anyone
The most common mistake we see is a homeowner paying for a drain cleaning on a line that needed a camera. If a company clears your main line twice in a year and never scopes it, they are treating a symptom and billing you for the privilege.
Other things to watch:
- Quotes without a camera. Nobody can price a collapse from the surface. If a contractor gives you a number before scoping, that number is a guess.
- Chemical drain cleaner on a main line. It will not clear a collapse, and the caustic sits in the pipe until someone opens it up.
- Ignoring the sunken spot. A depression in the yard does not heal. It grows, and the longer it sits, the more soil washes into the void.
- Waiting until the backup reaches the basement. By then the line has been surcharging for weeks and the damage is worse.
- Assuming insurance covers it. Standard homeowner policies usually exclude the lateral between the house and the street. Check before you need it.
We give you a flat price before we start, based on what the camera shows. If the line is repairable, we repair it. If it needs to come out, we tell you that straight.
When to call a professional
Call us when you have sewage standing in the yard, a sunken strip of ground over the line, or two or more fixtures backing up at the same time. Those three signs together mean the pipe has failed, and every day you wait, more soil enters the break.
Marietta Sewer Solutions handles collapsed sewer line repair across Marietta and the surrounding Cobb County area. We scope the line, show you the defect on camera, and give you a written price before we dig. If the line is a candidate for trenchless repair, we will tell you - most collapsed pipes under established lawns are, and it saves you the landscaping.
Frequently Asked Questions
What are signs of a collapsed sewer line in Marietta?
Sewage standing in the yard, a sunken strip of ground over the pipe run, and multiple drains backing up at once. Gurgling toilets, sewer odor inside the house, and repeated clogs in the same spot usually show up first. Two or more of those together means the main line has failed.
Can a collapsed sewer line fix itself?
No. A collapsed pipe has lost its shape or its structural wall, and soil keeps washing into the void. The only thing that changes without repair is the size of the excavation. Small cracks can sometimes be lined, but a true collapse has to be replaced or burst.
How much does collapsed sewer repair cost in Marietta Georgia?
In 2026, spot repairs run $1,200-$3,500, trenchless lining or bursting runs $4,000-$9,000, and full replacement runs $6,000-$12,000. Depth, length, and whether the line runs under concrete are the biggest cost drivers. A camera inspection first is $250-$450.
Will a collapsed sewer line cause sinkholes in Marietta?
Yes, and we see them regularly. As wastewater escapes the broken pipe, it washes soil into the void, and the ground above settles. Most start as a long shallow depression in the lawn. Left alone, they can open into a true sinkhole near a driveway or foundation.
Who repairs collapsed sewer lines in Marietta GA?
Marietta Sewer Solutions repairs collapsed sewer lines throughout Marietta and Cobb County. We scope the line first, show you the defect on camera, and quote a flat price before any digging starts. Trenchless options are available for most residential laterals.
Get help with sewer line repair in Marietta
If your yard is sinking, your drains are backing up, or you can smell sewer gas in the house, the line needs eyes on it today. We will scope it, show you exactly what is wrong, and give you a flat price before we touch a shovel.
Call Marietta Sewer Solutions at +14707391979 to schedule a camera inspection and collapsed sewer line repair in Marietta, Georgia.