Sewer line repair cost dataset

The matrix, with the impossible cells marked

⚠️ A dash does not mean dearer, it means that method does not fix that fault. A liner cures against the wall it finds, so a lined belly is still a belly and a collapse has nothing to cure against. Root cutting and jetting fix nothing on any row — they clear the bore and leave the joint or the corrosion exactly as it was, which is a real purchase for a year and not a repair. And Orangeburg has no cell at all: bituminous fibre pipe deforms rather than cracks, so there is no sound wall to line and jetting shreds it. It is the same shape as the cracked heat exchanger on our HVAC repair page — the arithmetic would be right and the word beside it would be dangerous.

Dig or line, over the same 8 feet

⚠️ Both columns treat the same length. Comparing a short dig against lining a whole run would be comparing two different jobs, which is the error this site keeps catching in its own work.

Under grass digging wins at every depth; under a driveway it flips at about 10 feet. ⚠️ Part of that is law rather than preference: beyond 5 feet an excavation needs a protective system under OSHA 29 CFR 1926.652 — Requirements for protective systems (excavations) (read 2026-08-25), which is why the price of a hole steps rather than slopes. Two identical defects fifteen feet apart can have opposite answers.

Against replacing the whole line

⚠️ Methods that do not fix the fault carry no cost per year, because dividing the price of something that does not work by the years it does not work for is not a comparison. And the counterintuitive result stands on its own: over grass at a normal depth, lining the whole run costs more than replacing it. Trenchless is cheaper where digging is expensive, which is a statement about the garden rather than about pipe. The replacement figure comes from our sewer line replacement dataset, which is also where this page was announced: it lists relining among the things it does not price.

Line items

89% of the reference total comes from estimated rather than official figures. The reference job is 60 feet of lateral relined for root intrusion, under grass, five feet down, surveyed first: 10.8 trade hours and $103.08 a foot. Methods that are not selected sit at zero quantity, so the table below is every path rather than one job.

The reasoning behind each figure

Camera survey and locating the defectestimated, ±43%

• ⚠️ The cheapest line on this page and the only one that tells you which of the other lines applies. Nothing about a sewer decision can be made from the symptom: roots, a belly, scale and a collapse all present as "it backs up", and they have four different answers.
• It also locates the defect and its depth, which is what decides whether digging is a morning or a fortnight — and whether it is under the lawn or under the driveway.
• Usually needs the line jetted first to see anything, which is priced separately below.

Hydro-jetting: truck, hose and operator on siteestimated, ±42%

• A jetting unit and the water it carries, on site for a half day. It scours the bore rather than punching a hole through the blockage, which is the difference between the line running and the line being clean.
• ⚠️ It clears a symptom. On grease it may be all you ever need; on scaled cast iron it is a bill that comes back, and on Orangeburg it does damage.

Root cutting: cable machine and operatorestimated, ±44%

• A cutter on the end of a cable, run through the line to clear the bore.
• ⚠️ It buys 1 to 3 years and changes nothing about the joint the roots came through. It is a legitimate purchase when you need the line working today; it is not a repair, and a contractor who calls it one is telling you something.

Cured-in-place liner, resin and end sealsestimated, ±44%

• A resin-saturated felt tube pulled or inverted through the existing pipe and cured, making a new pipe inside the old one. Priced by the foot of line relined.
• ⚠️ It needs a wall to cure against, which is what puts three of the seven faults on this page outside its reach. A liner follows the shape of the pipe: a lined belly is still a belly.
• It loses a little bore — a few per cent of diameter — which almost never matters on a domestic line and occasionally does on one that was marginal already.

Liner rig, boiler or UV train, and reinstating the branchesestimated, ±46%

• ⚠️ The fixed half of a lining job, and the reason lining forty feet costs nearly what lining eighty does. The rig arrives, the liner is wet out or the UV train is set up, and afterwards a robotic cutter goes back through to reopen every branch connection the liner sealed over.
• Reinstating the branches is the step that gets forgotten in cheap quotes and the one that matters: a sealed-over connection is a blocked bathroom.

Lining crew: clean, measure, wet out, invert, cure and cut in

• Six fixed hours plus 0.08 per foot: preparing the host pipe, measuring it, wetting out the liner, inverting or pulling it in, holding the cure, and then robotically cutting every branch connection back open.
• ⚠️ Most of it is fixed rather than per foot, which is the same shape as the rig and the reason lining forty feet costs nearly what lining eighty does.
• Wages are official BLS data for plumbers, pipefitters and steamfitters in your metropolitan area. The hours are our estimate.

Excavating and backfilling the repair holeestimated, ±45%

• Modelled as a hole three feet wide, to the depth of the pipe, and as long as the fault demands: 8 feet to cut out a joint or a crack, 14 to reach sound pipe either side of a collapse, and 20 to take up a sag and re-lay it to fall. ⚠️ That last one is why digging out a belly is the dearest repair on this page.
• ⚠️ Depth is not linear in cost and this line does not pretend it is: a trench deeper than five feet needs a protective system under OSHA 1926.652, and past about eight feet the walls have to be benched or boxed, which is a different machine and a different day.
• The surface multiplier is where a driveway shows up: cutting it, breaking it out and putting it back is a second job wrapped around the first.

Plumber and labourer: expose, cut out, joint in and test

• Six hours plus an hour per foot of depth: hand-digging the last of it, cutting the failed length out square, jointing in the new piece with couplings, bedding it and testing.
• ⚠️ The hours climb with depth faster than the excavation does, because the deeper it is the more of it is done by hand and the less by machine.

Trench box or shoring for a deep holeestimated, ±44%

• ⚠️ Not an upsell. Under OSHA 1926.652 an excavation deeper than 5 feet needs a protective system unless it is cut entirely in stable rock, and a contractor who puts somebody in an unsupported hole deeper than that is breaking the law rather than saving you money.
• It is also why the price of a spot repair steps rather than slopes: the same defect at four feet and at six feet is two different jobs.

Putting the surface backestimated, ±53%

• Topsoil and seed over grass; saw-cut edges, base and new concrete or asphalt over a drive. The band spans both because which one you get is the surface, not the price level.
• ⚠️ It is the line that makes people choose lining over digging even when digging is cheaper on paper, and the arithmetic supports them more often than not once the surface is hard.

Installing a cleanout to get accessestimated, ±49%

• A capped access fitting brought to the surface, dug in and connected. On plenty of older houses there is not one, and without it there is no way to get a camera, a jetter or a liner into the line at all.
• ⚠️ It is the first thing a contractor will quote and the one people query. It is also the thing that makes every future visit cheaper, including the ones nobody has planned yet.

Labourer: spoil, backfill and compaction

• Four hours plus half an hour per foot of depth, on a spot repair only. Backfill goes in in layers and gets compacted, because a trench that settles takes the surface down with it a year later.

Not included in this dataset

Replacing the whole line

⚠️ Deliberately not priced here even though this page compares against it constantly: a full replacement, open-cut or by pipe bursting, is on our sewer line replacement page, and the figure this page puts beside each repair comes from that model rather than from a second set of bands. One job, one model, one number. That page was also where this one was announced: it lists relining among the things it does not price.

The part of the line under the public road

Where your responsibility ends varies by city, and in plenty of them it does not end at the property boundary. The lateral under the road is dug under permit, to a municipal specification, often at night, and it is a different order of cost. Ask your water utility whose pipe it is before anybody quotes for it.

What the backup already did indoors

Water damage, contaminated flooring and whatever came up through the lowest fixture. That is remediation rather than plumbing and it has its own trades; our mould remediation page prices one part of it. ⚠️ It is also the part most likely to be an insurance conversation rather than a contractor one.

Whether insurance covers it

One of the questions Google shows on this search, and there is no national answer worth publishing: service line cover is usually an add-on rather than part of a standard policy, and what it includes varies. It is a question for your insurer in writing, and a better one to ask before there is a problem than after.