An Indigenous community in the Northern Territory now has access to affordable and continuous potable water thanks to an
innovative off-grid, modular water treatment plant that has won the 2020 Institution of Civil Engineers (ICE) Chris Binnie Award for Sustainable Water Management.
Project Gilghi was developed by international engineering, design and advisory company Aurecon and Hunter based electrical engineering
company Ampcontrol. It is a breakthrough solar powered water treatment plant that aims to provide safe drinking water to Indigenous and
remote communities across Australia.
The Chris Binnie Award recognises and celebrates outstanding civil engineering achievement in the field of sustainable
water management and how it has benefited society. Aurecon Chief Design Officer John McGuire said he was thrilled to see
the project receiving this prestigious international recognition.
“Project Gilghi addresses a national priority – water security for remote Indigenous communities. The solution not only
meets the challenge by utilising innovative technology, it also provides affordable potable water to a remote community
in an environmentally sustainable way,” Mr McGuire said.
“It’s a highly innovative evolution of technologies that can significantly contribute to reaching the United Nations
Sustainable Development Goal no.6, which aims to ensure access to clean water and sanitation for all by 2030.”
Professor Chris Binnie, ICE Water Panel member and Exeter University visiting Professor was highly impressed by Gilghi’s
value creation and its applicability to a bigger sustainability picture.
“Gilghi is a genuinely new project with a novel technological approach; the integration of the work of water process
engineering and electrical engineering and solar panels was particularly pleasing. The solution provides a reliable and potable supply of water in a sustainable
manner that does not increase CO2 emission,” Professor Binnie said.
Gilghi was deployed in the community of Gillen Bore, which until 2019 relied on the continued transport (150km round
trip from Alice Springs) of potable water due to the high salinity, hardness and low pH levels found in their existing
bore water.
The project was enabled by the Northern Territory Department of Local Government, Housing and Community Development with
a $70,000 Municipal and Essential Services Special Purposes Grant and supported by the client Ingkerreke Outstations
Resource Services.
Gilghi can take feed water from a variety of sources, including groundwater, rivers, lakes and oceans and turns it into drinkable water, compliant
with Australian Drinking Water Guidelines. For remote communities such as Gillen Bore, Gilghi is designed to offer a
complete solution that is operated and maintained by the community.
Ordinarily, water treatment systems run continuously, but Gilghi makes smart use of available solar power to run the plant and charge the batteries during
the day. This includes the development of a specialist electrical control system using multiple power sources to
reliably purify the water in batches, before feeding the clean water into the community’s reticulation system.
Julian Briggs, Aurecon’s Design Director for Water and Wastewater Treatment, said: “We wanted to challenge traditional
engineering design. Typically, we design the treatment process first and then think about the energy design, but for
Gilghi, we came at it from both angles so that we could use a sustainable power source to challenge the concept of
needing to go to the grid or rely on diesel-generated power.”
Given the modular design and rapid plug-and-play capability of the Gilghi solution, the unit can be extended or modified
to meet larger supply requirements in the future with the same efficiency and cost effectiveness.
“With the success of Gilghi, there are opportunities to support other remote communities in Australia and a range of
developing nations around the globe where access to the grid or water sanitation is limited or non-existent,” Mr Briggs
said.
“As we observe impacts of climate change around the world, Gilghi offers communities a transition to an alternative
water source where local dams or water tanks have been or are at risk of being exhausted.”
Gilghi recently won a Good Design Australia Award for Social Impact and the Infrastructure Project Innovation category at the 2020 Australian Water Association NSW Awards. The project is
also a 2020 Australian Engineering Excellence Awards (AEEA) Newcastle Division winner and will compete for the national Sir William Hudson Award.