Sewer Line Repair Houston: $150 to $3,800 + 311 Backups

All rows are national figures; no publisher lists a Houston-only sewer line price.

Do this now: sewage backing up in a Houston home

1. Stop using water: no flushing, laundry or showers until the line is cleared.
2. Report it to Houston 311 (713-837-0311 from a mobile phone). The 311 directory gives a residential sewer stoppage, a sewer blockage and a sewer overflow a 1-day service level each.
3. Keep children and pets away from sewage, and photograph the damage before cleanup.
4. If sewage reached floors or drywall, call your insurer too, and do not sign anything that hands your claim to a contractor.
5. Find the outdoor cleanout if you have one. The plumber will use it for the camera.

Is it urgent? Signs of a failing sewer line

Sewage coming up a drain is urgent. HomeGuide's warning signs for a failing line are sewer odors, gurgling, repeated clogs, debris in the tub or basement and wet patches in the yard. A single slow drain is usually a drain cleaning job, not a sewer repair; a camera inspection tells the two apart.

Who fixes what: the City of Houston or you

Houston Public Works fixes the public collection system, and some laterals are city-owned: the department says overflows from city-owned lateral lines are increasing, often caused by grease and wipes. The City pages we checked do not say exactly where the homeowner's service line ends and the City's lateral begins, so report a backup to 311 first and let the City check its side while your plumber checks yours.

Houston's Plumbing Inspections Section handles sewer inspections along with ground, rough and final inspections. Before a line is replaced, ask the plumber whether the job needs a City permit and a sewer inspection, and who will pull it.

Houston's aging pipes and the $9 billion consent decree

Houston Public Works is upgrading the city's aging wastewater system under an EPA Consent Decree, a 15-year commitment in its fifth year, and says the estimated cost has grown from $6 billion to $9 billion. Grease blockages cause 70% of the city's sanitary sewer overflows, the department says.

Private lines age too. City of Houston Planning's 2024 tables count 192,199 housing units built in the 1970s, the largest single decade, and 41,296 built in 1939 or earlier. HomeGuide says clay and Orangeburg sewer pipe lasts 30 to 60 years, and PVC, cast iron and copper 50 to 100 years. Angi's Houston cost page adds that the area's expansive clay soil swells when wet and shrinks when dry, which stresses underground pipes.

Trenchless or dig: Houston sewer line repair methods

Trenchless repair (lining or bursting) costs $60 to $250 a foot and traditional excavation $50 to $200 a foot, This Old House says, and excavation add-ons run $400 to $1,200 or more. Lining saves a driveway or a mature tree; digging is sometimes the only option for a collapsed or badly sagging pipe. HomeGuide says most homeowners policies do not cover wear and tear, and This Old House says basic home warranties rarely cover sewer repairs.

Hiring for sewer work in Houston

1. Ask for the camera video and a written description of where the break is.
2. Get a price for each method that would work.
3. Ask who pulls the City permit and schedules the sewer inspection.
4. Check the license on the TSBPE public search and ask for proof of insurance.
5. Ask for a camera run after the repair to confirm it.

More Houston plumbing pages: plumber in Houston, emergency plumber in Houston and water heater repair in Houston. The national sewer line repair guide compares every method. Compare sewer line repair in San Antonio, where SAWS reimburses some locating costs, and sewer line repair in Phoenix. See also home repair costs.