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Wastewater Treatment Plant – Digester Cleaning in South Australia

NPE was engaged by Fulton Hogan to undertake the full cleaning of Digester #6 at the Bolivar Wastewater Treatment Plant – South Australia’s largest treatment facility of its kind located in Adelaide’s northern suburbs. NPE commenced works in early January 2026, with all elements delivered on schedule in mid March 2026. The works involved the…

Wellpoint dewatering system installed for sewer infrastructure works in Huntingdale, WA.

Huntingdale Sewer Infrastructure Dewatering Project

Huntingdale Sewer Infrastructure Dewatering Project – Case Study The Huntingdale dewatering project involved installing more than 1.2 km of new sewer infrastructure along the environmentally sensitive banks of Wungong Brook, between Rusthall Way and Bullfinch Street in Huntingdale, WA. Because the construction footprint followed a natural waterway and moved through several different soil types, the…

PFAS Treatment Perth, WA

The treatment process begins with a dewatering system that extracts groundwater for processing. The influent is conveyed through the plant, where it undergoes a series of steps to reduce soluble metals and trace levels of Per- and Polyfluoroalkyl Substances (PFAS). Water first passes through the Chemical Dosing Unit, where selected chemicals and coagulants are added…

Wellpoint Dewatering System Rottnest Island

Compact Wellpoint Dewatering System Delivered for Rottnest Island WWPS Project NPE recently delivered a compact wellpoint dewatering system for a Type 10 Wastewater Pump Station (WWPS) on Rottnest Island, Western Australia. With groundwater levels approximately 2.4 metres above the base level, the project demanded a dependable solution to maintain dry excavation conditions. Demonstrating our capability…

EnviroPacific: Former PDP2 Oily Wastewater Pond Remediation

NPE was contracted to undertake the design, installation and operation of the dewatering system for this project. The NPE inhouse Civil Construction Engineering team completed this work then ensured that the design was compliant with the external regulatory requirements. A highly skilled team of 6 were utilised to install the dewatering systems onsite over the…

Alkimos Seawater Desalination Plant Perth NPE

Alkimos Seawater Desalination Plant Perth, WA

The Alkimos Seawater Desalination Plant (ASDP) – Stage 1 is a major infrastructure initiative aimed at delivering 50 gigalitres per annum of desalinated seawater to Perth’s Integrated Water Supply Scheme, with provision for future expansion to 100 GL per annum. The project also includes treatment of approximately 4.9 GL/year of groundwater and is being delivered…

Water Main Installation in the Town of Bassendean

DM Civil engaged NPE for the installation of approximately 90 meters of new water main in the Town of Bassendean, a project that required extensive dewatering, water treatment, and environmental management. The work involved tunnelling a sleeve from Ashfield Reserve under an existing rail line and two busy main roads, ultimately emerging at Railway Parade.…

Water Seepage Management Solution

NPE’s client recognised the need for a robust water seepage management system to mitigate potential flood risks to the Wedgefield industrial area. This requirement emerged alongside the dredging works, which were expected to raise water levels in the Dredge Material Management Areas, thereby increasing groundwater levels due to seepage. NPE was engaged to provide a…

Dewatering for the Repair of Leaking Serpentine Trunk Water Mains

In early 2025, the urgent repair of the Serpentine trunk water mains prompted implementing a specialised dewatering strategy. The project was initiated due to reported leaks in the water mains, which required significant excavation work to rectify. The project was bounded by the requirement to minimise disruption to the surrounding environment and infrastructure while ensuring effective groundwater…

Mosaic Parkside Subdivision Dewatering WA

Bos Civil is currently undertaking the Mosaic Parkside Subdivision, Stage 1 project in Balcatta. This involves deep excavation and service installation. With the primary challenge of groundwater, extensive dewatering is required due to the depth of the excavations. To address this, the NPE team have installed doublesided Wellpoint systems to lower groundwater levels and localised…