sewer cleaning & televising

Hydro-Excavation | J.C. Dillon, Inc.

What is Hydro-Excavation?

Hydro-excavation is a non-mechanical, non-destructive process that uses pressurized water and industrial strength vacuum to simultaneously excavate and evacuate soil. As hydro-excavation safely breaks up soil, the soil and water slurry is conveyed by vacuum to a debris tank.

Instead of manual or mechanical digging methods, hydro-excavation uses water to break up soil, which virtually eliminates any risk of underground utility damage. The hydro-excavation process results in safe, fast, precise excavations that require less backfill, labor, restoration and has less environmental impact than traditional excavation techniques.

Hydro-Excavation at Work:

  • Potholing/Daylighting
  • Slot Trenching
  • Debris Removal
  • Exposing Utilities
  • Piling Hole Excavation
  • Cold Weather Digging
  • Remote Digging


Excavating or exposing underground utilities using hydro-excavation is called potholing or daylighting. Since hydro-excavation is a non-mechanical, non-destructive process, it enables underground utilities to be exposed without the risks inherit in traditional manual or mechanical excavation methods. Potholing is also a time and cost saving digging method for the installation of signs, telephone poles, fences and the like.

Slot Trenching

Digging narrow trenches for installing pipes, cables or other in-ground utilities is called slot trenching. Unlike traditional slot trenchers, which can cause serious and costly damage, hydro-excavation provides a non-destructive and efficient slot trenching method even on frozen surfaces. Hydro-excavation makes it easy and safe to install sprinkler systems, locate underground utilities and perform similar installations without the risk of damaging previously installed systems or lines.

Debris Removal

With hydro-excavation’s precise, non-destructive characteristics, it can be used to remove debris and clean out a variety of structures without damaging the surrounding area. Hydro-excavation is also an ideal solution for catch basin cleaning, sludge removal and cleaning up spills.

Exposing Utilities

Since hydro-excavation uses water to break up ground and vacuum up debris, it is the safest and most efficient method of exposing underground utilities. It eliminates the risk of damaging buried utilities. Using hydro-excavation to expose utilities, which is called potholing or daylighting, ensures that the surrounding material is undisturbed.

Piling Hole Excavation

With hydro-excavation’s precision, it is ideal for piling hole excavation. Underground utilities that may be uncovered during excavation are not harmed in contrast to the high risk of damage that exists with using manual digging methods.

Cold Weather Digging

Since hydro-excavation trucks are equipped with truck-mounted heaters, cold weather does not deter them from working. Unlike traditional ground thawing methods that use wood and coal, hydro-excavation is environmentally friendly and safe.

Remote Digging

When fiber optic cables, telephone lines, water mains or other utility lines need to be repaired or excavation needs to be done in tight spaces or congested, hydro-excavation equipment can be located away from the actual excavation site. This minimizes the impact and restoration requirements to the actual site, and eliminates traffic congestion and inconvenience.

At J.C. Dillon, Inc,. we can handle any size job including Sewer Work, Plumbing, Sump Pumps, Trenchless Technologies, Utility Work and more.