At InSite, we operate a state-of-the-art water treatment facility in Revesby, NSW, designed to deliver fast, effective and fully compliant water treatment solutions for projects of all sizes.
Our specialist team designs, constructs, and operates advanced treatment systems that target a wide range of contaminants. The result is high-quality treated water that’s safe for re-use or discharge, helping clients meet strict regulatory and environmental standards with confidence.
To maximise flexibility, InSite has developed a range of mobile and containerised technologies. These systems allow process water to be pumped, treated, and discharged via sewer, irrigation, infiltration trenches, or to the stormwater system under licence — all without the need for permanent infrastructure.
InSite provides efficient, cost-effective, and fully compliant water treatment solutions tailored to your project needs.
CASE STUDY: HYDRAULIC CONTROL OF NITROGEN PLUME — PILBARA REGION, WA
InSite’s in-house design and construction team delivered a complete turnkey water treatment plant to hydraulically control a nitrogen plume migrating off-site in the Pilbara Region, Western Australia. The project combined innovative engineering, environmental remediation, and robust construction to meet the unique challenges of the remote, harsh environment.
The project involved hydraulic containment nitrogen plume , transforming a third-party concept into a fully operational system. Key components included:
Fabrication and installation of a Hydraulic Containment System
Fabrication and installation of an Enhanced Bioremediation System
Installation of 36 × 100 mm extraction wells along the down-gradient site boundary
Construction of three dedicated evaporation ponds for groundwater management
Full design development, procurement, fabrication, and construction by the InSite team
Delivering this project required solving complex technical and logistical problems:
Well Network Design-Wells were spaced approximately 15 m apart over a 650 m stretch.
Electrical Infrastructure- With electric pumps operating over long distances, voltage drop became a key design factor. The team engineered solutions to maintain operational efficiency across the well field.
Harsh Climate Conditions- The extreme Pilbara heat demanded specialised container linings using cool room panels and upgraded air conditioning units to protect sensitive equipment.
Remote Location -Being located far from InSite’s east coast facilities meant careful logistics planning for mobilisation, materials, and workforce to keep the project on schedule.
The project successfully delivered a fully operational water treatment plant that now provides effective hydraulic control of the nitrogen plume, supporting environmental compliance and protecting surrounding land and groundwater resources.
InSite also implemented advanced telemetry and remote monitoring, allowing the operations team on the east coast to support the system in real time. This ensures continuous oversight, rapid response to system alerts, and reduced need for frequent site visits — improving operational efficiency and lowering costs.
InSite’s in-house design and construction team delivered a complete injection unit to work in conjunction with a hydraulic control system for the treatment of a nitrogen plume in the Pilbara Region, Western Australia. The project combined innovative engineering, environmental remediation, and robust construction to meet the unique challenges of the remote, harsh environment.
The project involved enhanced in situ bioremediation, transforming a third-party concept into a fully operational and portable system. Key components included:
Fabrication and installation of an Enhanced Bioremediation System
Utilisation of groundwater extracted from multiple wells, including hydraulic containment system (HCS) wells and dedicated wells adjacent to the injection area
Portable 6 m shipping container designed as a plug-and-play system, currently deployed at two locations across the site
Containers lined with cool room panels and air conditioning units upgraded to suit Pilbara conditions
Extracted groundwater from down-gradient wells was mixed with sodium lactate (electron donor) and sodium metabisulfite (oxygen scavenger), then re-injected upgradient to stimulate bioremediation
Setup and maintenance managed by the client’s subcontractor, with InSite staff operating during quarterly injection events (approximately three weeks across both areas)
The system is now successfully operated quarterly in two separate locations by local contractors using the plug-and-play design.
InSite has implemented advanced telemetry and remote monitoring, enabling the east coast operations team to actively support onsite personnel during each injection event. This includes adjusting system parameters, undertaking calculations, managing injection sequences, and flushing lines post-events in real time.
By leveraging local boots on the ground and remote expertise, the client has achieved significant cost savings compared with mobilising InSite representatives from the east coast for every event.
InSite was engaged to design, construct, operate, and maintain a water treatment system at a decommissioned industrial site in New South Wales. The project scope included the treatment of hydrocarbons, sludge, sediment and silt-contaminated water from decommissioning works, as well as the decontamination of plant and equipment and the wash down of plant infrastructure. All treated water was disposed of to the sewer under a trade waste agreement with Sydney Water.
The project involved the delivery of a fully automated water treatment system designed for continuous, unmanned operation. Key components included:
Break tank
Oil/water separator
Air stripper
Granular activated carbon (GAC) adsorbers
Automated control system allowing 24/7 operation without on-site personnel
During the decommissioning works, a total of 6,110,462 litres of contaminated water was successfully treated and discharged to the sewer under the trade waste agreement with Sydney Water. The system provided reliable and efficient treatment, supporting site decommissioning activities while maintaining compliance with water discharge requirements.
Design, construction, operation, and maintenance of treatment system
Automated 24/7 operation with no on-site personnel
Effective treatment of hydrocarbon, sludge, sediment and silt-contaminated water
Over 6 million litres of water treated and safely discharged to sewer
Full compliance with trade waste agreement conditions
InSite was engaged to mobilise a recovery system to site and pump LNAPL groundwater to a 95,000-litre on-site storage tank. The project supported ongoing recovery operations during site decommissioning, with a focus on reliable, automated performance in a remote and challenging environment.
The project involved the delivery and installation of a fully automated pumping system designed for continuous, unmanned operation. Key components included:
Air compressor
AP2 total fluids pumps (top load)
Aboveground storage tank (AST), retained on site post-demolition
Automated control system allowing 24/7 operation without on-site personnel
Monthly operation and maintenance visits to check the system, service the compressor, and gauge wells
Periodic removal of AST contents using a vacuum tanker, transported to an approved waste facility
Delivering this project required addressing a range of technical and logistical issues:
Harsh Climate Conditions – With high temperatures in the region, the containerised system included an exhaust fan. If internal temperatures exceeded the set point, the system would automatically shut down to prevent equipment damage.
Remote Location – Limited access to technical supplies meant all required spares were planned and taken during scheduled O&M visits.
Fatigue and Road Conditions – All work was undertaken in two-man teams. Road conditions were assessed prior to each mobilisation, with flooding impacting routes on multiple occasions. Journey management plans were implemented, and driving times were limited to daylight hours only.
The duration of works was 17 months, during which a total of 153,000 litres of contaminated groundwater was recovered and disposed of at an approved waste facility. The automated system operated reliably with minimal on-site intervention, supported by regular maintenance and remote monitoring.
Mobilisation, setup, and maintenance of a product recovery system
Automated 24/7 operation with no on-site personnel
Telemetry installed to monitor air supply, temperature, and tank contents
Use of solar-powered security cameras to monitor the site and deter vandalism
InSite was engaged to mobilise a water treatment system to site to initially dewater an excavation during backfilling works. Following the completion of dewatering, it was decided to utilise the system for ongoing groundwater remediation while it remained on site. This allowed efficient use of existing infrastructure to support extended environmental works.
The project involved the delivery and installation of a fully automated treatment system designed for continuous, unmanned operation. Key components included:
Treatment unit, including inlet tank and media vessels
3-inch down well electric pump use of level sensor an variable speed drive to control flow rate
Batch tank post treatment to confirm treatment prior to initial disposal
Automated control system allowing 24/7 operation without on-site personnel
Monthly operation and maintenance visits to check the system and gauge wells
Discharge to sewer under local authority permit, with approved flow meter and gas meter installed at the discharge point
The duration of works was 10 months. During dewatering activities, approximately 1.4 megalitres of water was treated and discharged to sewer under permit. Following dewatering, the system remained on site to treat impacted groundwater. The automated system operated reliably with minimal on-site intervention, supported by regular maintenance and remote monitoring.
Mobilisation, setup, and maintenance of a water treatment system
Automated 24/7 operation with no on-site personnel
Telemetry installed to monitor system performance
