Sewage in a basement is a health hazard and a decision point. Our 24/7 dispatch line handles sewer line repair in Lawrence, MA, and licensed, insured plumbers may be able to come the same day. While you wait, stop using water, keep people and pets out of the wet area, and do not try to push the sewage back with a hose.
A sewer line repair fixes the pipe that carries waste from your house to the public sewer in the street, called the lateral. Clearing a clog does not repair a crack, a belly or a collapse. This page is about those physical failures.
Sewage backup: what is happening and what to do
A sewer backup means waste cannot leave the building and is rising through the lowest opening, usually a basement floor drain, a shower or a toilet. The cause can be a clog, a root intrusion, a broken pipe or a problem in the city main. The first job is to learn which.
If the backup is in your house only, the blockage is probably on your side. If neighbors are reporting the same thing, the city main may be involved. In Lawrence, the sanitary overflow report line is 978-620-3580 or 978-620-3110, so call it if you suspect a main problem.
A plumber usually clears the line first so the water goes down, then runs a camera to see why it failed. If it is just grease, the page on sewer line cleaning is the right path. If the camera shows damage, repair comes next.
Before we arrive: sewage in the house
These steps limit contact and damage. They are not a fix.
Stop all water use
No flushing, laundry, dishwasher or showers. Every drain in the house empties into the same blocked line.
Keep out of the water
Sewage can carry bacteria. Keep children and pets away, wear waterproof boots and gloves if you must enter, and wash well afterward.
Protect what you can
Move stored items off the floor. If water is near outlets or the panel, do not touch them. Call your electric utility or an electrician if the area is wet.
Take photos
Photograph the water level and affected items for your records and any insurance claim.
Who owns the pipe from the house to the street in Lawrence
The city sewer department maintains Lawrence's 137 miles of sanitary and combined sewer mains. The property owner is responsible for the lateral, the pipe between the house and the main. So a crack in your lateral is usually your bill, even if the break is under the street or sidewalk.
The exact point where the lateral ends can vary, so confirm with Lawrence Water & Sewer at 978-620-3110 before you plan a dig. That call also tells you what excavation permits the city wants for work in the public way.
Repair options: spot repair, trenchless lining or full replacement
The camera sets the options. These are the three main paths, with honest trade-offs.
| Option | Best when | Trade-off |
|---|---|---|
| Spot repair | One broken or offset section, reachable depth | Digs a short trench, leaves old pipe elsewhere |
| Trenchless lining | Cracks or root-prone joints in otherwise straight pipe | Needs the line cleaned first, not for collapsed pipe |
| Pipe bursting | Pipe is failing along its length, path is clear | Needs entry pits, not for every soil or layout |
| Full replacement | Collapse, major offsets or repeated failures | Largest disruption, longest-lasting result |
Not every property allows every method. Depth, bends, other utilities and the condition of the pipe decide.
Not sure if the pipe is broken?
Call the 24/7 line and tell us what the house is doing. We will explain whether a camera and a repair estimate are the next step.
Signs the lateral is damaged, not just clogged
A clog clears. A damaged pipe keeps coming back. These patterns suggest the pipe itself.
- Backups return within weeks of a cleaning.
- Multiple fixtures gurgle or drain slowly at the same time.
- A sewage smell in the basement or near the foundation.
- A wet, sunken or unusually green patch above the line outside.
- Foundation drain or floor drain backs up during heavy rain.
- Cable or jet work brings back clay chips, rust or roots.
- Camera footage shows an offset joint, a crack or a sag that holds water.
How the break is found: camera, locator and dye tests
A sewer camera is a waterproof lens on a flexible rod that goes in through a cleanout or a pulled toilet. It shows cracks, offsets, roots and sags, and a locator can trace the camera head from above ground to mark the depth and the spot. That mark is what tells a crew where to dig, or whether lining is possible.
A clean cleaning before the camera matters, because debris hides damage. We run footage when we can and explain it on the spot. For the full picture of what it shows, see sewer camera inspection.
Septic, and what Lawrence's sewer means for you
Lawrence is on city sewer, so a septic tank is not part of a Lawrence repair. Septic matters just over the line. Andover reports that some properties use on-site septic, and North Andover extended sewer along Route 125 through 2023, partly to replace septic systems.
If you live in one of those towns, check which system you have before calling. A septic problem is not solved by a sewer lateral repair. In Massachusetts a Title 5 inspection is required within two years before a sale. Our pages for Andover and North Andover give local detail.
Think twice before adding a backwater valve
A backwater valve is a check valve on the building sewer that can stop sewage from flowing back in during a surcharge. State guidance says to check with the sewer authority before installing one, because the valve changes how your drains behave in a backup.
Do not install one on your own. Ask Lawrence Water & Sewer at 978-620-3110 and pull a permit. If your backups happen during storms, the city's combined sewers may be involved, and the right fix may be on the public side.
Permits and old pipe
Sewer and drain work is not minor under Massachusetts rules. Plumbing and gas fitting work that is replaced or repaired needs a permit from the local inspector. In Lawrence that office is Inspectional Services at 200 Common St, 978-620-3130. Ask them what applies to excavation in the street.
Lawrence housing is old. The city's plan says about 53 percent of units were built in 1939 or earlier. Laterals from that era were commonly clay or cast iron, and joints in clay can admit roots. That is general knowledge, not a city record, so let the camera tell you what you have.
What affects the cost of sewer line repair
A clear price comes before any dig. These factors move it most.
Sewer line repair questions in Lawrence
Yes. The dispatch line runs 24/7. After hours, we first work to stop the backup and make the house safe, and a camera and repair plan follow. We do not promise arrival times.
Not always. A clogged drain affects one fixture or branch. A sewer backup means waste cannot leave the building. See drain cleaning for local clogs and our sewer cleaning page for main line blockages.
Often, if the pipe is not collapsed and the path is straight enough. Trenchless lining and bursting can limit digging, but they need the line cleaned first and a camera look to confirm.
It can, if the pipe is structurally intact and the line can be cleaned. Lawrence homes are mostly basement construction, but garages and additions may sit on slabs. The camera decides.
No. Lawrence is on city sewer. Septic service matters for some homes in nearby Andover and North Andover. If you are unsure which you have, ask the town or call us before ordering any work.
Yes. A camera with a locator can trace the line and mark the depth above ground. That tells a crew where to dig or whether lining will reach.
In Lawrence, the property owner is responsible for the lateral, so repairs are usually the owner's cost. Confirm the boundary with Lawrence Water & Sewer, and check your policy for any endorsement.
Yes. We serve Methuen and nearby towns. Methuen sewage also goes to the Greater Lawrence Sanitary District, but lateral rules can differ by town.