Temporary Water Supply for PNG Defence Base Defence

The Lombrum Joint Initiative involves significant upgrades to the Lombrum Naval Base located on Manus Island in Papua New Guinea (PNG). The project, which was officially launched in August 2025, stands as Australia’s biggest security infrastructure undertaking in the Pacific region. MAK Water was engaged early in the design phase by the ADF consultant to develop a robust potable water treatment solution capable of operating in a harsh tropical environment with highly variable raw water quality due to an uncontrolled catchment and extreme rainfall. Without a reliable system, the client faced risks to operational continuity, increased costs, and compliance challenges associated with water quality and system resilience.

Defence facilities are often located in extremely remote regions for safety and security reasons, creating unique challenges for essential services such as potable water supply. At one Department of Defence (DoD) field training site, the existing water treatment plant (WTP) was no longer able to meet potable water standards in accordance with the Australian Drinking Water Guidelines (ADWG). With no surface water available, the site relied solely on bore water containing dissolved iron concentrations well above ADWG limits. The harsh desert climate, with high summer temperatures and low overnight winter temperatures, further impacted system performance, reliability, and sustainability.

This end‑of‑life water infrastructure renewal project required a new chlorination dosing system designed for an existing 500kL concrete water tower. As the asset deteriorated, the existing disinfection and dosing equipment could no longer reliably maintain stable chlorine levels, increasing the risk of non‑compliance with the Australian Drinking Water Guidelines (ADWG). Without renewal, the client faced escalating compliance risk, reduced system reliability and sustainability concerns due to inefficiencies in chemical use, energy consumption and asset performance.

Our client was experiencing significant operational challenges due to turbidity spikes in river water extraction during heavy rainfall events. The existing water treatment plant (WTP) was unable to operate under high turbidity conditions, resulting in frequent shutdowns that disrupted site operations. These shutdowns increased operational costs, reduced productivity, and posed compliance and sustainability risks by limiting access to reliable, treated water during critical periods.

The client, a civil construction company delivering works for the Australia Singapore Military Training Initiative (ASMTI), required a reliable potable water solution for the Australian Defence Force (ADF). The ADF needed a consistent supply of potable water that could be safely stored and maintained within specification. Without an onsite solution, the ADF would incur significant ongoing costs transporting potable water to site, while also increasing safety risks associated with vehicle movements during training exercises. MAK Water was selected to design and manufacture a reliable solution to treat the source water, which required additional disinfection. Our team worked closely with the client to design a fit for purpose solution that complies with the Australian Drinking Water Guidelines (ADWG).

The client required an upgrade to the existing washbay system at Royal Military College, Duntroon (RMC-D) in the ACT. The previous system was not adequately treating heavy and light vehicle washbay water. This resulted in a film forming on vehicles, overdosing of flocculant carrying over into the process, and oil being carried through the system. These issues affected operational efficiency, increased rewash time, raised chemical consumption costs, and risked non‑compliance with environmental and Defence standards.