Hydro Excavation, Non-Destructive Digging.
Hydrovac services for utility potholing, daylighting, and precise trenching across Wisconsin.
WIL-Surge Electric provides hydro excavation services across Wisconsin with our own hydrovac trucks and in-house crews. We use non-destructive digging to expose utilities and dig precise trenches without the strike risk of mechanical digging, on our own projects and as a standalone service for general contractors, owners, and municipalities.
What Is Hydro Excavation
Hydro excavation is non-destructive precision digging with pressurized water and vacuum. The water breaks up the soil, and the truck's vacuum pulls the loosened material into a debris tank, leaving a clean, open excavation.
Because nothing sharp or heavy touches the ground, buried lines are exposed rather than struck. That makes hydrovac digging the safer choice anywhere existing utilities are in the way.
When to Use It
Hydro excavation earns its place on congested sites, where power, communications, gas, and water lines run close together and a backhoe or excavator bucket could hit one of them. It is also the right tool for tight spots where there isn't room for a machine, and for jobs that need a narrow, precise trench rather than a wide open cut.
A smaller excavation also means less surface to restore afterward, which keeps disruption to paving, landscaping, and the areas around the work to a minimum.
Utility Potholing & Daylighting
Locate marks show roughly where a utility runs, not exactly how deep it sits. Utility potholing uses hydro excavation to dig small test holes at key points so crews can confirm the actual location and depth of a buried line before design or construction moves forward.
Daylighting goes a step further, exposing a line along the stretch where work will happen so it stays visible and protected while crews dig, bore, or build around it. Both keep surprises out of the schedule and give designers and field crews real information instead of assumptions. Our underground utility crews use the same approach before trenching and boring near existing lines.
Planning Pothole Locations
Potholing is most useful when each test hole is placed with a purpose. The best locations are usually where a new line will cross an existing one, where proposed foundations or bores come close to a marked utility, and where the locate marks or old records leave room for doubt. A few well-placed holes can answer more questions than many scattered ones, and grouping locations along a route keeps truck moves and time on site to a minimum.
Before the truck arrives, it helps to have locate marks in place, drawings of the planned work on hand, and a clear idea of what each hole needs to confirm, whether that is where a line runs, how deep it sits, or what it is made of. Recording what each pothole finds lets designers and field crews rely on the results long after the hole is closed.
Hydrovac vs. Mechanical Digging
A backhoe or excavator moves large volumes of soil quickly in open ground, and it remains the right tool for mass excavation away from buried lines. Hand digging is gentle but slow, and it gets harder as holes get deeper or soil gets heavier. Hydro excavation sits between the two: precise enough to work right next to utilities, and faster than digging the same hole by hand.
The tradeoff is in handling the material. Because soil comes out as a wet slurry held in the truck's debris tank, the plan for where that material goes should be settled before digging starts, and the excavation is often backfilled with fresh material rather than the spoils that came out. On many projects the right answer is a mix: hydrovac where lines are close, and machines for the open ground beyond them.
Safety Advantages
A utility strike can injure crews, cut service to the surrounding area, and stop a project. Hydro excavation lowers that risk compared with mechanical digging, because water and vacuum expose lines instead of tearing into them.
Before we dig, we call in Digger's Hotline (Wisconsin 811) tickets so existing utilities are marked, then use hydro excavation to verify what the marks show.
Service Area
Our hydrovac trucks work statewide, from our base in Butler to job sites across Wisconsin. We take on hydro excavation as part of our own electrical, mechanical, and civil projects, and as a standalone service for general contractors, facility owners, and municipalities that need utilities exposed safely.
Request Service
Tell us your project scope, location, and timeline through our request a quote page. Our estimating team reviews the details and responds with next steps.
See our underground utility services for trenching, directional boring, and duct banks, or browse all 17 trades.
Dig safely with hydro excavation.
Preconstruction support, budgeting, and design-build expertise, from a partner who self-performs the work.