San Antonio Hydro Excavation | Safe Vacuum Excavation Services
San Antonio Hydro Excavation uses pressurized water and industrial vacuum systems to break up and remove soil without striking the pipes, cables, and conduits buried underneath your job site. This method, also called hydrovac or vacuum excavation, gives crews accurate control over the size and depth of every hole.
We work with homeowners, commercial property managers, municipalities, and contractors across San Antonio, TX. Our services include utility daylighting, potholing, slot trenching, sewer and water line exposure, and slurry removal.
Traditional digging near buried infrastructure carries real risk, from service interruptions to repair costs and safety hazards. With 20 years of experience in the field, we help clients complete excavation work with fewer surprises and less disruption to the surrounding ground. Call 210-940-0021 to discuss your project.
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Hydro Excavation And Hydrovac Services
We use pressurized water and industrial vacuum systems to break up soil and remove it without striking buried lines. The result is controlled digging around gas, electric, water, sewer, and fiber infrastructure across San Antonio job sites.
Hydro Excavation
Hydro excavation uses a focused stream of water to cut through soil while a vacuum removes the resulting slurry into a debris tank.
This method works well in the clay and caliche soils common throughout Bexar County, where mechanical digging risks damaging shallow utilities.
We handle a range of applications:
- Potholing and daylighting to verify utility depth and location
- Slot trenching for conduit, irrigation, and small-diameter pipe
- Pole and sign hole excavation with clean, consistent sidewalls
- Exposing sewer and water lines ahead of repair or tie-in work
Heated water can be used when needed for frozen or compacted ground. Because the operator controls water pressure at the nozzle, we can adjust the cut for soft topsoil or dense material without changing equipment.
Hydrovac Excavation
Hydrovac excavation refers to the truck-mounted system that combines the water and vacuum components in a single unit. Our trucks carry both fresh water and a debris tank, which allows crews to work continuously without shuttling material off-site during the dig.
Component
| Function |
|---|---|
Water tank and pump | Supplies pressurized water to the digging wand |
Boom and vacuum hose | Lifts spoils from the excavation into the tank |
Debris tank | Holds slurry for transport and disposal |
Extension hose | Reaches locations set back from the truck |
Boom reach and hose extensions let us dig in alleys, easements, and areas behind buildings where an excavator cannot fit. Spoils are contained in the tank rather than piled on the surface, which keeps the work zone clear on tight commercial and municipal sites.
Vacuum Excavation
Vacuum excavation covers both water-based and air-based methods of lifting soil out of an excavation.
Air excavation is the preferred option when the soil must stay dry and reusable as backfill, or when working directly against fiber optic conduit and coated pipe.
We select the method based on:
- Soil conditions — clay and rock respond better to water
- Utility type — air reduces the chance of coating damage
- Backfill requirements — dry spoils can go straight back in the hole
- Disposal access — slurry requires an approved offload location
Both approaches keep the excavation open and visible, so crews can inspect lines before repair work begins.
Utility Locating And Safe Digging Services
Before any blade or bucket breaks ground, we use pressurized water and vacuum recovery to expose what's below the surface. Our crews verify the depth, alignment, and condition of gas lines, water mains, fiber conduit, and electrical duct banks across San Antonio job sites.
Utility Daylighting
Daylighting means opening a controlled window in the soil so a buried line becomes visible and can be confirmed by eye.
Electromagnetic locating and ground penetrating radar give you an approximate horizontal position. They do not give you exact depth, pipe material, or the condition of the coating.
We fill that gap. Our hydrovac units cut through caliche, clay, and compacted fill without contacting the utility, then vacuum the spoil into an onboard debris tank.
Common daylighting applications include:
- Exposing existing lines before boring or trenching
- Verifying as-built drawings against field conditions
- Clearing a work window for tie-ins, taps, and repairs
- Confirming clearance for foundation piers and pole holes
Each excavation is documented with depth measurements and photos when requested, then backfilled and compacted to your specification.
Utility Potholing
Potholing is a targeted test hole, usually 12 to 24 inches across, drilled at a specific station along a proposed route.
We use it when your crew needs a confirmed depth and offset at set intervals before directional drilling or open-cut work begins.
The advantage is cost and speed. A hydrovac pothole takes minutes, disturbs a fraction of the surface area that mechanical digging would, and eliminates the risk of a shovel or excavator tooth striking a live line.
What we provide with each pothole:
Item
| Detail
|
|---|---|
Depth reading | Measured from grade to top of pipe |
Utility type | Material and approximate diameter |
Location | Station and offset marked in the field |
Restoration | Backfill, compaction, and surface patch |
We handle asphalt and concrete surfaces with core cutting, so the patch is clean and the roadway or parking area returns to service quickly.
Trenching And Underground Line Excavation
Pressurized water and vacuum recovery let us cut narrow, controlled trenches without the soil displacement and utility strikes that come with mechanical digging. We use this approach for conduit runs, irrigation lines, and repair work on sewer and water mains across San Antonio.
Slot Trenching
Slot trenching produces a narrow, straight-walled cut — typically 6 to 12 inches wide — sized to the pipe or conduit being installed rather than to the machine doing the digging.
That precision matters on jobs where the trench crosses existing utilities. We remove only the soil we need to remove, which reduces spoil volume, backfill costs, and surface restoration.
Common applications include:
- Electrical and fiber conduit runs through developed areas
- Irrigation and landscape lighting lines where turf damage must stay minimal
- Gas and water service laterals from the main to the meter
- Duct bank installation on commercial and municipal projects
Because the vacuum unit collects spoil directly into a debris tank, we keep the work area clear and haul material off-site rather than stockpiling it along the trench line.
Sewer & Water Line Excavation
Locating and exposing a failed sewer or water line is often the slowest part of a repair. We speed that up by cutting directly to the pipe without risking damage to the line we came to fix.
Hydro excavation is well suited to this work for a few reasons:
Condition
| How we handle it
|
|---|---|
Pipe location uncertain | Potholing at intervals until the line is found |
PVC, clay, or cast iron pipe | Water pressure exposes without cracking or gouging |
Congested utility corridor | Selective removal around adjacent gas and electric |
Saturated or clay soil | Vacuum recovery keeps the trench workable |
We expose the section your plumber or contractor needs, hold the excavation open for the repair, and return for backfill when the work is signed off. Our crews also handle cleanout access digs, manhole excavation, and tie-in points where a new line meets an existing main.
Why Choose Our Hydro Excavation Company In San Antonio
We have spent 20 years exposing utilities across Bexar County, and that experience shows in how we plan each dig, control water pressure, and manage the spoils we remove. Our crews follow a documented process and run equipment sized for the job, whether that means a residential water line at 3 feet or a fiber conduit crossing under a commercial parking lot.
What Does Our Professional Hydro Excavation Process Involve?
Every project starts with a site review and a call to Texas 811 to confirm marked utility paths before any water touches the ground. We then set up the truck, establish traffic control if the work sits near a roadway, and cut the surface material — asphalt, concrete, caliche, or turf — as cleanly as the conditions allow.
From there, our operator directs pressurized water into the soil while the vacuum system pulls the loosened material into the debris tank. Pressure gets adjusted based on soil type; San Antonio clay behaves differently than the rocky fill common in newer subdivisions. Once the utility is visible, we measure depth, record the location, and photograph the exposure for your records. Backfill and cleanup close out the job. We restore the hole with native material or flowable fill, then haul slurry to an approved disposal site.
Which Materials, Products, Equipment And Related Services Are Used For Hydro Excavation?
Our equipment list stays consistent because the work depends on reliable, well-maintained gear:
Purpose
Contains slurry and supplies water on site
Purpose
Cut soil at varying pressures without harming pipe coatings
Purpose
Reach depths past 10 feet in tight quarters
Purpose
Heats water for frozen or compacted ground
Purpose
Traffic control and open-hole protection
For backfill we use native spoil, sand, gravel, or flowable fill depending on what the utility owner or inspector requires.
Related services we perform on the same mobilization include potholing, daylighting, slot trenching, culvert and catch basin cleanout, and debris removal from vaults and manholes.
Planning & Timeline
Most hydro excavation jobs in San Antonio move from first call to backfill within a few days, though utility locate requirements and site access often set the pace. Below, we outline how we schedule work, evaluate conditions on your property, and match equipment and methods to the job in front of us.
Hydro Excavation Project Timeline – What To Expect At Each Stage
Timelines vary with depth, soil, and the number of locations to expose, but a typical residential or light commercial job follows a predictable pattern.
Stage | Typical Duration
|
|---|---|
Initial call and scope review | Same day or next business day |
Texas 811 utility locate request | 2 business days (state requirement) |
Site walk and access planning | 30–60 minutes |
On-site excavation | 2–6 hours per pothole; 1–2 days for trenching |
Backfill, slurry haul-off, and cleanup | Same day as excavation |
Caliche and limestone, common across Bexar County, can slow cutting compared to clay or loam. We flag those conditions during the estimate so the schedule reflects reality.
Emergency line breaks are handled outside this sequence, with locates coordinated as an emergency ticket.
Our Hydro Excavation Process – Steps From Consultation To Final Completion
We start with a conversation about what you need exposed and why — a sewer lateral, an unmarked gas line, a foundation footing, or a series of bore pits. From there, the sequence runs:
- Scope and quote. We confirm depth, hole count, dimensions, and access.
- Locates. We submit or verify the 811 ticket and review markings against your plans.
- Setup. The truck is staged, hoses are run, and the work zone is barricaded.
- Excavation. Pressurized water cuts the soil while the vacuum removes spoil into the debris tank.
- Verification. We measure and photograph exposed utilities, recording depth and offset.
- Restoration. Holes are backfilled or left open per your instructions, and slurry is hauled to an approved disposal site.
- You receive documentation of what was found before we leave.
Assessing And Preparing Your Property For Hydro Excavation – How The Evaluation Works
The site evaluation determines whether our truck can reach the dig location and what has to be protected along the way.
We check:
- Access width and overhead clearance for the vacuum truck, plus hose reach if the truck must stay curbside
- Surface type — turf, decomposed granite, concrete, or asphalt — since each affects restoration
- Slope and drainage, which influence where water and slurry can be contained
- Private utilities such as irrigation, landscape lighting, pool lines, and propane, which 811 does not mark
On your end, preparation is straightforward: move vehicles, unlock gates, secure pets, and point out anything buried that you know about.
If irrigation or invisible fencing crosses the work area, tell us before we arrive.
Hydro Excavation Planning – Selecting The Right Materials, Design And Project Requirements
Planning decisions come down to hole geometry, water pressure, and how spoil is handled.
Hole design. Potholes are usually 12–24 inches in diameter; slot trenches run narrower and longer for pipe or conduit runs. We size openings to your inspection or tie-in requirement, not larger.
Water temperature and pressure. Heated water helps in packed clay and frozen ground; pressure is dialed down near fragile fiber conduit and older clay sewer pipe.
Backfill material. Native spoil is not always reusable once slurried. Flowable fill, sand, or select fill may be specified — particularly under driveways and roadways where compaction matters.
Permits and standards. Work in city right-of-way, near SAWS mains, or on CPS Energy easements carries its own submittal and clearance rules, which we confirm before mobilizing.
Cost & Budget
Hydro excavation in San Antonio is typically priced by the hour, with rates shaped by crew size, truck capacity, soil conditions, and how far the job site sits from our dispatch point. Understanding the variables ahead of time helps you compare quotes accurately and avoid surprises on the final invoice.
Hydro Excavation Pricing Guide – What Affects Project Costs?
Several factors determine what you'll pay for a hydrovac project:
- Dig depth and diameter – A 4-foot pothole costs far less than a 12-foot bell hole.
- Soil type – San Antonio's caliche and limestone shelves take longer to cut than sandy loam or clay.
- Number of excavations – Multiple potholes on one mobilization lower the per-hole cost.
- Access – Tight alleys, downtown streets, and active roadways slow production.
- Water source – On-site hydrant access reduces refill trips.
- Spoils volume – Larger digs fill the debris tank faster and require more disposal runs.
Permitting, traffic control, and after-hours scheduling also shift the total. We quote each of these line items separately so you can see exactly where the budget goes.
How Much Does Hydro Excavation Cost? – Price Ranges For Different Options
Most hydro excavation work in the San Antonio market falls into these ranges:
Service | Typical Range
|
|---|---|
Hourly hydrovac truck + operator | $250 – $450 per hour |
Two-person crew (complex or deep work) | $350 – $550 per hour |
Single utility pothole (shallow, 3–5 ft) | $400 – $900 each |
Deep pothole (8–15 ft) | $900 – $1,800 each |
Slot trenching | $30 – $75 per linear foot |
Minimum mobilization / day rate | $600 – $1,500 |
Most contractors, including us, apply a 3- to 4-hour minimum. Volume potholing on a single mobilization usually drops the per-hole price toward the lower end of these ranges.
Comparing Hydro Excavation Options – Cost Differences By Material, Method And Service Level
Hydro excavation carries a higher hourly rate than a backhoe or mini-excavator, but the comparison changes once risk is factored in.
Mechanical digging runs cheaper per hour, yet a single struck gas line or fiber conduit can cost tens of thousands in repairs, fines, and downtime.
Air vacuum excavation works well in dry, loose soil and produces reusable spoils, but it struggles in the compacted caliche common across Bexar County. Hydro excavation cuts through it more efficiently.
Hand digging avoids equipment fees but is slow, labor-intensive, and rarely practical below 5 feet.
Service level matters too. Standard daytime work is the base rate; night, weekend, and lane-closure jobs typically add 15–30 percent.
Additional Hydro Excavation Costs – Expenses To Consider Beyond The Base Price
Beyond the hourly rate, budget for these line items:
- Spoils disposal – $150 – $600 per load, depending on the facility and whether material is classified as contaminated.
- Water supply – Hydrant meter permits from SAWS, or hauled water when no source is available on site.
- Traffic control – Cones, signage, or flaggers for right-of-way work, often $500 – $1,500 per day.
- Permits – City of San Antonio right-of-way and excavation permits.
- Backfill material – Flowable fill, sand, or select fill when native spoils can't be reused.
- Standby time – Charged when crews wait on locates, inspections, or other trades.
- Travel – Mileage surcharges for sites outside the metro area.
We itemize these on every estimate so the quoted number reflects the full scope of work.
Proudly Serving Other Areas
Our crews travel well beyond the San Antonio city limits. If your project sits within a reasonable drive of Bexar County, we can bring a hydrovac unit to your site.
We also take calls from Converse, Universal City, Live Oak, Selma, Helotes, Bulverde, Lockhart, and Devine.
Travel time affects scheduling and pricing on longer hauls, so we're upfront about both when you call. For jobs outside these areas, ask us anyway — we'll tell you honestly whether we're the right fit or point you toward someone closer.
Multi-day or multi-site projects across the region are welcome. We coordinate with general contractors, utility companies, and municipalities that need consistent hydro excavation support across several locations.
Our equipment is mobile, and our operators are used to working on unfamiliar sites. Whether it's a tight residential lot in Alamo Heights or an open industrial yard south of town, the approach stays the same: locate, expose, and protect what's buried.
Communities we regularly serve include:
Area
| Common Project Types
|
|---|---|
New Braunfels
| Utility potholing, residential digs |
Schertz & Cibolo
| Subdivision work, daylighting |
Seguin
| Water and sewer line exposure |
San Marcos & Kyle
| Contractor support, slot trenching |
Boerne & Kerrville
| Rural utility locating |
Canyon Lake
| Septic and line access |
Pleasanton & Floresville
| Pipeline and industrial potholing |
Hondo & Castroville
| Agricultural and municipal digs |