Trenchless Sewer Repair — Camera First, No Guesswork
A failing sewer lateral is one of the few plumbing problems where the wrong diagnosis costs you thousands — not hundreds. At Armor Pro Services, our licensed crew cameras every sewer line before any repair work is quoted, mark the defect with a 512Hz sonde so there's no guessing about depth or location, and then give you a straight comparison: trenchless or open-cut, whichever fixes your specific problem for less money. License RMP #36282 is on every permit we pull through the City of San Antonio Development Services Department.
What Sewer Line Repair Actually Involves
Your sewer system has two distinct segments, and understanding which one is broken determines everything about who pays and how it gets fixed. SAWS (San Antonio Water System) owns and maintains the main sewer line running under the street. Your lateral — the pipe that runs from the cleanout at or near your property line all the way to where it connects at the main — is yours. That lateral is your financial responsibility from the moment it leaves the foundation until it reaches the city connection point. We camera the full lateral run so you know exactly where the defect is, how large it is, and whether it's on your side of the boundary before any repair work begins. That camera run also establishes whether the failure is a spot issue (a single cracked joint or root intrusion point) or a systemic problem affecting the full length of the pipe. Scope determines method. Method determines cost. We don't skip the camera run to get to a quote faster — that shortcut is how homeowners end up paying for repairs that don't hold.
Is It Your Problem or the City's?
SAWS is responsible for the sewer main running under your street. You are responsible for the lateral line from your home's cleanout to the point where it ties into that main. In practical terms: if a camera shows the collapse or root intrusion is inside your property line or within the lateral running to the city connection, Armor Pro Services handles the repair under permit. If the camera shows the defect is in the main line itself, we document the finding and walk you through how to report it to SAWS — that work is theirs to fund and schedule, not yours. Not sure where the property boundary falls? We can locate the lateral and mark both the defect depth and the approximate connection point during the camera inspection. Zero competitors on this SERP explain this boundary. We do, because a homeowner who understands liability is a homeowner who makes a confident decision — and doesn't feel taken advantage of later.
Warning Signs Ranked by Urgency
Monitor closely: One slow drain in a single fixture usually points to a localized clog, not a lateral failure. Watch it for 48 hours after cabling before escalating to a camera inspection. Schedule soon (within a week): Multiple slow drains on the same stack, gurgling sounds when you flush, or a faint sulfur smell from floor drains mean the lateral is partially blocked. Root intrusion or early pipe deflection commonly produces this pattern. Don't wait for it to back up — you'll make the decision under much worse conditions. Call today: Sewage backing up into a tub or floor drain, wet or sunken soil over the lateral path in your yard, or a persistent raw sewage odor inside the home are failure-in-progress signals. At this stage, every hour of delay risks contamination of your crawl space or slab, and the repair scope typically expands the longer you wait. These aren't scare tactics — they're the patterns we see repeatedly on camera after a homeowner waited two weeks too long.
Repair vs. Full Replacement: How the Decision Gets Made
The answer isn't always the more expensive option. Here's the framework we use after camera inspection. Spot repair is appropriate when: the defect is a single offset joint, cracked section under 3 linear feet, or isolated root intrusion point in an otherwise intact pipe. A spot repair is faster, cheaper, and has a long service life when the surrounding pipe is structurally sound. Trenchless CIPP lining is appropriate when: the pipe has multiple cracks or joint separations along a continuous run of 10 feet or more, the pipe material is clay, cast iron, or Orangeburg in serviceable condition (not collapsed), and the host pipe has enough structural integrity to support the liner installation. CIPP lining can add 30–50 years to a lateral that would otherwise need full replacement. Pipe bursting is appropriate when: the pipe has collapsed sections or severe root damage making lining impractical, but the trench path can be accessed with entry and exit pits at each end of the run. Bursting pulls a new HDPE pipe through while fracturing the old one outward — minimal excavation, new pipe, done. Open-cut replacement is appropriate when: pipe depth is shallow and accessible, damage is extensive, or the lateral runs under non-landscaped open ground where excavation cost is lower than trenchless mobilization. We'll tell you directly when open-cut is cheaper. We don't upsell trenchless when a straightforward dig-and-replace is the right call for your site.
Why Sewer Lines Fail Here — Local Conditions
San Antonio's geology is hard on sewer laterals in ways that most of the country doesn't experience. Expansive black clay soil dominates large portions of the metro. This soil swells when wet and contracts hard when dry — and the seasonal drought-flood cycle here means it moves repeatedly, year after year. Every movement cycle stresses pipe joints. Clay and cast iron laterals laid before 1970 were not designed for this kind of cumulative fatigue. Limestone bedrock shifts create another failure mode in hillside and near-creek areas where the substrate isn't uniform. When the ground beneath a pipe settles unevenly, you get belly sections — low spots where solids accumulate and roots concentrate. Orangeburg pipe — a compressed wood-fiber material used extensively from the 1940s through the late 1960s — is past its service life everywhere it still exists. It delaminates from the inside out and cannot be lined; it has to be replaced. Monte Vista, Olmos Park, and much of the West Side have substantial Orangeburg and early-era cast iron still in the ground. Live oak and mountain laurel root systems are aggressive and will follow moisture directly into a cracked joint. A tree 20 feet from your lateral can still find its way inside. Camera inspection identifies root intrusion early, before it causes collapse.
Trenchless vs. Traditional Excavation — Direct Comparison
Cured-in-place pipe lining (CIPP): A resin-saturated liner is pulled or inverted into the existing pipe and cured in place, creating a jointless pipe within a pipe. Yard disruption is minimal — typically only the cleanout access point. Completion timeline is usually one day. The liner carries a manufacturer warranty and does not require full excavation. Not viable on collapsed pipe or where the host pipe has less than 50% of its original diameter remaining. Pipe bursting: Two small excavation pits — one at each end of the damaged run — allow a bursting head to be pulled through the old pipe while simultaneously pulling new HDPE behind it. The old pipe fractures outward into the surrounding soil. Yard disruption is limited to the two access pits. Timeline is typically one day. This method works on collapsed sections where CIPP cannot. Open-cut excavation: The yard is opened along the full lateral run, the damaged pipe is removed, and new pipe is installed in the trench. Higher surface disruption, longer restoration time, but sometimes significantly lower cost on shallow, accessible runs — especially where the landscape over the lateral is already minimal. Spot repair: A targeted excavation over a single defect point. Fastest, lowest cost, appropriate only when the rest of the pipe is intact. We finish every job with a post-repair camera run and a written report confirming the line is clear and flowing correctly.
Our Sewer Repair Process — Inspection to Completion
Step 1 — Camera inspection: We run a push camera through the lateral from the cleanout and record the full run. You see exactly what we see. Defects are logged by footage mark. Step 2 — Sonde locating and marking: A 512Hz sonde locates the defect underground and we mark the surface directly above it, confirming depth. No guessing, no excavating to find the problem. Step 3 — Method selection and scope agreement: Based on camera findings, we present the repair options — trenchless, open-cut, or spot repair — with a clear explanation of why we're recommending one over the other. You decide. Step 4 — Permit filing: When the scope requires it, we file through the City of San Antonio Development Services Department under RMP #36282 before work begins. No permit surprises after the fact. Step 5 — Repair execution: The crew arrives with the equipment staged for the agreed method. Spot repairs and trenchless jobs are typically completed in one day. Full lateral replacements run one to three days depending on length, depth, and site conditions. Step 6 — Final camera verification: Every repair gets a post-work camera run. We confirm the line is clear, the repair is holding, and there are no secondary defects downstream. Step 7 — Backfill and surface restoration: Excavated areas are backfilled and compacted. We don't leave a mudhole in your yard and call it done.
What Determines Your Sewer Repair Cost
We won't publish flat rates here — and any contractor who does is either padding the number or setting you up for a change order conversation later. What actually drives cost on a sewer repair job: Linear footage of damage: A 4-foot spot repair costs a fraction of a 60-foot lateral replacement. Camera inspection establishes this before you agree to anything. Pipe depth: Deeper excavation means more labor and shoring requirements. San Antonio laterals vary significantly in depth depending on neighborhood grade and era of construction. Access method: Trenchless mobilization has upfront equipment costs that open-cut doesn't, but trenchless saves landscape restoration costs. The right method for your site depends on both factors. Pipe material: Orangeburg cannot be lined — it requires full replacement. Cast iron in good structural condition is an excellent CIPP candidate. Clay pipe condition varies by age and soil movement history. Permit requirements: Permitted work adds a predictable fee and inspection step. It also protects you — unpermitted sewer work can become your liability problem at resale. Soil and site conditions: Rocky substrate or high groundwater table increases excavation cost. Black clay soil that's saturated adds time to compaction and backfill. Contact us for a camera inspection and a written scope — that's the only honest starting point for a real number.
Frequently asked
How long does a sewer line repair take?
A spot repair on an accessible section of lateral is typically completed in one day with the line back in service that evening. Trenchless CIPP lining or pipe bursting on a longer run takes one to two days. Full open-cut lateral replacement from foundation to city connection runs one to three days depending on total footage, pipe depth, and whether permitting requires an inspection hold before backfill. We give you a realistic timeline before work begins — not after.
Will you have to dig up my yard?
Not always, and never more than necessary. Trenchless CIPP lining requires only the cleanout access point — no trench along the lateral run. Pipe bursting requires two small access pits at each end of the damaged segment. Open-cut excavation is reserved for situations where it's either the only viable method or the lower-cost option for your specific site. After camera inspection, we explain exactly what surface disruption to expect before you approve the scope.
Does homeowners insurance cover sewer line damage?
Standard homeowners policies typically cover sudden, accidental damage from a sewer backup inside the home — but not the repair of the lateral pipe itself. Some policies include a sewer line rider for an additional premium; check your declarations page. We provide an itemized written scope, camera footage with footage-marked defect locations, and a condition report, which gives your adjuster the documentation they need to evaluate any applicable coverage. That documentation is often the difference between an approved and denied claim.
Can you repair a sewer line that runs under a concrete slab?
Yes. Lines running under a slab present access challenges but are routinely repaired. Trenchless CIPP lining is often the preferred method when the pipe has enough structural integrity to support a liner — it eliminates the need to break and restore the slab over the damaged section. When a collapsed section under the slab can't be lined, targeted saw-cutting with minimal concrete removal is the alternative. Camera inspection and sonde locating identify the exact footprint before any concrete work begins.
How long do trenchless sewer repairs last?
CIPP liners installed by trained technicians with properly prepared host pipe carry manufacturer-rated service lives of 50 years or more. Pipe bursting installs HDPE pipe, which has an equivalent or longer projected lifespan. In both cases, the actual longevity depends on correct installation — host pipe preparation, liner thickness selection, and cure quality. That's why we run a post-repair camera before we call the job complete. A liner that looks right from outside the cleanout isn't confirmed until we verify it on camera.
Do I need a permit from the City of San Antonio for sewer line repair?
Permit requirements depend on scope. Spot repairs on a short accessible section may fall below the permit threshold, but full lateral replacements and trenchless relining of extended runs require a permit filed through the City of San Antonio Development Services Department. Armor Pro Services files under RMP #36282. Permitted work includes a city inspection that protects you at resale and confirms the work meets code. We handle the filing — you don't have to navigate Development Services on your own.
Is it my problem or SAWS's problem?
SAWS owns and maintains the sewer main running under the street. The lateral from your cleanout to the point where it connects to that main is your responsibility — including the portion that runs under the public easement or right-of-way up to the city's connection point. Camera inspection confirms which side of that boundary the defect falls on. If the failure is in the SAWS main, we document it and walk you through reporting it to SAWS at no additional charge — that repair is theirs to fund.