Hydro excavation and hydrovac potholing in St. Louis.
Hydro excavation, hydro vacuum excavation, and hydrovac are three names for the same method: water loosens the soil and a vacuum removes it. St. Louis infrastructure runs deep and old. We hydrovac around live utilities, fiber conduit, and aging clay sewer systems across the metro — with controlled water-and-vacuum excavation at the exposure. Our vacuum excavation trucks are right for tight urban corridors and active right-of-way jobs.
- Lambert Intl. Airport — utility daylighting
- HWY 55 corridor — fiber installation support
St. Louis Metro
The full scope,
one contractor.
St. Louis is the metro hub we serve most — jobs span everything from downtown utility work to suburban site development across the county line. We don't sub the work out — the same crew that quotes the job does the work.
Pressurized water loosens soil and the vacuum removes it to expose a utility at a selected point. Controlled operation, locating, and utility-owner requirements still matter.
The hose reaches where heavy equipment can't. Dense corridors, active facilities, and residential lots are all workable.
We expose sewer and water lines safely for camera inspection, repair access, and tie-in verification before any mechanical work begins.
Utility strikes and active breaks don't wait for business hours. Dispatch is available around the clock for emergency hydrovac response.
Tell us whether the project is under Metropolitan St. Louis Sewer District jurisdiction. We review the required contractor approvals, permits, and inspection arrangements for the scope.
Our operators hold NULCA certification — the industry standard for safe vacuum excavation around buried utilities.
Local conditions,
local expertise.
St. Louis project work spans a spectrum that no other metro quite matches — century-old utility corridors downtown, suburban foundation digs through glacial till and clay, and commercial redevelopment in tight corridors where every buried line has to be confirmed before a bucket moves. Aging infrastructure in South City and North County generates steady sewer and water repair calls, and the utility density in the downtown commercial core makes hydrovac the standard for any excavation near established rights-of-way.
Our process
in St. Louis, MO.
Before the truck moves, we confirm all utility locates are in. We call 811 and coordinate on any private locates not covered by the state ticket — irrigation, private fiber, or unmarked service lines.
The hydrovac unit is positioned for hose reach to your dig area. Water pressure is set to match soil conditions — more for compacted clay and fill, less for loose or sandy ground near buried utilities.
Pressurized water cuts the soil column. The vacuum pulls material into the debris tank continuously. The operator controls the exposure around identified utilities; locating and utility-owner precautions still apply.
Material goes into the tank and off your site. We backfill or leave the opening per your downstream repair or inspection scope. The area is left clean and documented with photos.
Quote the exposure points, not just truck hours.
Mark the proposed holes on a plan or photos. Include the surface, truck access, locating status, and what the next crew needs to verify. Agree on who records measurements and handles spoil, backfill, and pavement restoration. Hydrovac exposure supports the next construction decision; it does not replace utility locating.
- Request a defined utility-potholing scope
- Hydrovac quote checklist
- Planning hydrovac work in frozen ground
Hydroexcavation
in St. Louis, MO
What is hydroexcavation and how does it differ from conventional digging?
Hydroexcavation uses pressurized water to break up soil and a vacuum to extract the debris at a selected exposure point. Conventional excavation uses a bucket or blade, which can strike and damage buried lines. In St. Louis, MO, where infrastructure ages vary and utility maps aren't always current, hydrovac reduces reliance on a digging bucket at the exposure. It does not eliminate damage risk or replace locating and utility-owner precautions.
Is emergency hydrovac service available in St. Louis, MO?
Yes. We run 24-hour emergency dispatch for utility strikes, active breaks, and time-sensitive daylighting jobs. Call (636) 465-4226 for emergency response in St. Louis, MO and the surrounding area.
Do utilities need to be located before you arrive?
Yes — a valid 811 locate ticket is required before any vacuum excavation begins. For private utilities not covered by 811 (irrigation systems, private fiber, unmarked service lines), arrange private locates in advance. We'll walk the site with you before work begins.
What size hydrovac jobs does J1S handle near St. Louis, MO?
Single pot-holes for utility verification up to full-day production hydrovac runs. If you're unsure whether your scope fits, call dispatch and describe the work — we'll confirm and give you an estimated timeframe.
Hydroexcavation near St. Louis, MO
St. Louis job coming up?
Call dispatch — we run to St. Louis regularly and can schedule same-week for most jobs.