Hydrovac potholing, service proving and trenching around live assets from Wollongong and Port Kembla to Dapto, Albion Park and Shellharbour.
Hydro excavation cuts soil away with a pressurised water lance while a vacuum boom lifts the slurry into the truck. Nothing mechanical touches the asset, which makes it the non-destructive digging method to use when a water main, gas line, power cable or fibre route has to be found and exposed intact.
Wollongong is the newest region in the Dynamic network. Coverage was extended south of Sydney into the Illawarra in 2026, and the local operation works with the broader New South Wales fleet behind it. Crews support civil contractors, utilities, councils and builders across the region.
Much of the Illawarra is built on a narrow coastal strip between the escarpment and the sea. Roads, rail, water, sewer, power and telecommunications all have to fit into that same band, so many corridors carry several networks side by side and new work almost always crosses an existing one.
In that setting the risk is less about finding one service than about separating several close together. Hydro excavation lets the operator open the ground between assets, confirm which is which, and leave the neighbouring services untouched while the target is exposed.
Port Kembla is an industrial and port precinct, and work on that kind of land is typically governed by the site operator: inductions, permits to dig, isolations and set work areas come before any excavation. The crew works to those controls, and the paperwork is sorted out during scoping rather than at the gate.
Industrial ground can also hold services the drawings do not show. Taking the excavation down with water and vacuum means an unexpected cable or pipe is uncovered, not cut, and the site can confirm what it is before the work continues.
Before You Dig Australia plans and locating results give an approximate position. For a design that has to thread a new main, conduit or footing past existing assets, that is not enough. Potholing at each crossing point exposes the service so its depth and alignment can be surveyed and designed around.
Locating is available through LADS, part of the Dynamic Group, so a potholing programme can start with the locate and finish with proven positions through a single contact. Scope, number of holes and survey arrangements are agreed when the job is quoted.
A lot of Illawarra hydro excavation happens beside moving traffic or on sites with little room to spare. The truck stands where the traffic plan allows and the operator works in by hose, so the footprint at the excavation stays small and spoil never sits on the road.
Each pothole can be backfilled and made safe at the end of the shift. Traffic control, permits and approved hours are worked through before the crew mobilises.
Service proving on trafficked roads where several networks share the corridor.
Exposure of electrical and gas assets ahead of upgrades and new connections.
Locating and exposing fibre and conduit routes before new installations.
Exposing water and sewer mains for connections and renewals.
Permit-controlled excavation on industrial and port sites such as Port Kembla.
Potholing and service proving ahead of civil works across the Illawarra.
The core of the fleet. Truck-mounted vacuum units for hydro excavation, service exposure and material recovery.
Supplied for: Hydro Excavation, Vacuum Excavation, Vacuum Loading
High-capacity 10x4 units for larger volumes and sustained excavation and recovery programmes on major projects.
Supplied for: Hydro Excavation, Vacuum Excavation, Hydro Tankers
Excavators supplied with experienced operators for civil earthworks and site preparation.
Supplied for: Excavator Hire
Safety on site
Yes, subject to the site operator’s requirements. Tell us the inductions, permits and isolations the site needs when you enquire, so they are arranged before the crew is booked to start.
Crews work across Wollongong, Port Kembla, Unanderra, Fairy Meadow, Corrimal, Dapto, Albion Park and Shellharbour. Those areas are covered from the Wollongong operation rather than from a depot in each suburb, and availability for a date is confirmed at enquiry.
Yes. LADS, a Dynamic Group company, marks the services first and the hydrovac crew follows on the same programme. On Illawarra corridors with several networks side by side, that sequence is what lets each asset be identified before the next hole is opened.
Underground utility locating delivered by LADS, part of the Dynamic Group.
Industrial vacuum excavation for safe, efficient exposure and removal of material.
Excavators with experienced operators for civil earthworks and site preparation.
Drain-camera inspection and pipe-condition assessment for planning and asset management.
Hydro Excavation in other regions: Hydro Excavation Brisbane, Hydro Excavation Gold Coast, Hydro Excavation Sydney, Hydro Excavation Sunshine Coast, Hydro Excavation Newcastle, Hydro Excavation Townsville, Hydro Excavation Cairns, Hydro Excavation Coffs Harbour, Hydro Excavation Tweed Heads
Project evidence
No Wollongong case study for this service has been published yet. These show the same service delivered in other regions.
Related insights
Written by the people who run this work, on how jobs are planned and what changes on site.
The company began on the Gold Coast in 2003 with two operators, two vacuum excavation trucks and a shed. It now runs depots from Wollongong through to Cairns, with more than 200 assets across the wider Dynamic Group.
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Hydro excavation combines a high-pressure water jet with high-volume suction to remove soil without a mechanical cutting edge. It is the standard method for exposing live underground services and for digging where a machine bucket cannot be used safely.
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LADS, Locate & Detection Specialists, joined the Dynamic Group in 2026. It brings CERTLOC accredited underground service locating and ground penetrating radar in house, alongside the excavation and inspection fleet.
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Read ArticleTell us about the site and the work and the Wollongong team will respond. For urgent works, call 1300 822 878.
What to send us for an accurate hydro excavation quoteStep 1 of 6: Service