Sydney Non-Destructive Hydro Vaccum Excavations

NDEA is Greater Sydney’s subterranean safety specialist, protecting its essential underground infrastructure.

Below the surface, there is a vast city of subsurface utilities, buried infrastructure supplying our gas, water, sewerage, electricity and communications.  Whilst essential, these subsurface utilities pose a danger for any excavation or building work as any damage to the utilities can result in expensive damage claims, delays and possible injury to workers or the public. It is therefore critical to safely and quickly locate all the underground infrastructure before any work on site is commenced.

Most utility providers require that any contractor working near their underground infrastructure, prove the existence and location of the utility, and some require the utility to be fully exposed before commencing any works. To achieve this ‘Dial Before You Dig’ (DBYD) recommends the use of non-destructive excavation (potholing/trenching) as the best practice method to identify, locate and protect any subsurface utility.

NDEA’s Services include :

NDEA employee working

Non Destructive Excavation (Potholing)

Safe and effective method of exposing a subsurface utility using water blaster and vacuum techniques without damage

NDEA Non Destructive Excavation truck

Vacuum Excavation

Use a sucker truck to quickly and safely remove wet or dry materials

NDEA truck


Reinstatement of potholed areas, using sand, roadbase and cold mix

working tools

Electromagnetic Locating

Use radio frequencies to locate subsurface utilities

non destructive excavation tool

Roadsaw and Core Drilling

Quickly cut through asphalt and concrete


CCTV Inspection

Check the condition of pipes, joints and find blockages easily

NDEA recommends the Dial Before You Dig (DBYD) “Best Practice Guide for Locating Underground Services”:

  • Plan: Lodge your Dial Before You Dig enquiry at least two business days prior to works commencing.
  • Pothole: Use NDEA to establish the exact vertical and horizontal location of all underground infrastructure.
  • Protect:  Use NDEA to backfill any trenches and potholes, or fence off the area.
  • Proceed: Proceed with excavation works.

Our valued clients:

Contact NDEA today on 1300 764 753 or Email us below…..

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