• Asia Pacific Rentals & Services
• 14/10/2025

TURNING WASTEWATER INTO A RESOURCE AT A BUSY REGIONAL AIRPORT

Centurion Water & Wastewater Solutions has delivered a wastewater treatment system for a busy regional airport in Western Australia, turning up to 100 kL of wastewater a day into clean, reusable water. The treated water is safely reused across the airport for irrigation, toilet flushing and other non-drinking purposes, saving fresh water and supporting sustainability in a dry, remote region.

At a busy regional airport in Western Australia, Centurion Water & Wastewater Solutions (CWWS) has delivered a system that turns wastewater into a valuable resource, helping the facility save fresh water, reduce environmental impact, and operate more sustainably.

Behind the scenes, wastewater from the airport is processed through two Sequencing Batch Reactors (SBRs) and an Ultrafiltration (UF) plant supplied by CWWS. Together, they treat up to 100 kilolitres of wastewater every day, transforming it into clean, reusable water for non-potable applications across the airport.

How the process works

The process can be seen clearly in the three samples above, from right to left:

• Raw sewage – the untreated wastewater entering the plant
• SBR Decant – water that has been treated through the SBR’s Anoxic, Aerobic, Settle and Decant phases, already much clearer
• UF Permeate – crystal-clear, ultra-filtered and disinfected water, safe for reuse

The treated water is then reused throughout the airport for:

• Watering gardens and lawns
• Toilet flushing
• Other non-drinking applications

Supporting sustainability in regional WA

By recycling treated wastewater on-site, the airport reduces its reliance on fresh water, a critical consideration in remote and dry regions like the Pilbara.

It’s a practical example of how modern, compliant wastewater treatment technology can help regional facilities operate more efficiently while supporting long-term environmental goals.