The Ministry of Lands and Mineral Resources, in partnership with the Australian Government through Geoscience Australia, has launched a major groundwater mapping initiative to improve the understanding and protection of Fiji’s water resources on its largest island, Viti Levu.
This initiative represents the government’s most significant investment to date in the scientific assessment of water resources. With additional support from the Pacific Community (SPC), this collaborative effort aims to strengthen Fiji’s capacity to sustainably manage its vital groundwater resources.
Fiji faces mounting pressure on freshwater resources, with approximately 47 per cent of treated water lost through ageing infrastructure while rural communities depend on unreliable shallow wells. This survey seeks to pinpoint and address critical water shortages, particularly in areas where traditional sources become depleted during extended dry periods.
The initiative uses airborne electromagnetic (AEM) technology, using helicopter-mounted sensors to detect underground water resources to depths exceeding 300 metres. The process is entirely non-invasive, requires no ground disturbance or drilling and is safe for people, livestock and the environment.
"This comprehensive assessment will provide the scientific foundation needed to secure water resources for all Fijians, particularly as we face the growing impacts of climate change," said Minister for Lands and Mineral Resources, Hon. Filimoni Vosarogo.
He added, "This partnership is a major breakthrough in our efforts to provide reliable groundwater data across Fiji. It means our rural and maritime communities, many of whom rely solely on groundwater, will benefit from science-based planning to ensure safe and sustainable water access.”
"I thank Geoscience Australia and SPC for their willingness to step in and support the full national rollout. This shows their trust in the work of the Ministry and their commitment to local and regional development,” said Minister Vosarogo.
The survey results will provide government agencies, communities, and development partners with detailed three-dimensional maps showing groundwater distribution, quality indicators, and sustainable yield estimates across the surveyed areas. This information will guide strategic decisions about future water infrastructure investments, drought preparedness planning, and long-term resource management.
"We are proud to support Fiji's groundwater mapping initiative, which represents exactly the kind of science-based approach needed to address water security challenges across our region."
"Our decades of experience with electromagnetic surveys and groundwater assessment in Pacific Island countries have shown these technologies can provide crucial data for communities facing increasing climate pressures. This partnership with Fiji's Ministry of Lands and Mineral Resources and Geoscience Australia demonstrates how regional collaboration and technical expertise can deliver practical solutions for sustainable water management for our members," said SPC Deputy Director General Science and Capability, Dr Paula Vivili.
This groundwater survey represents part of a global trend toward using advanced geophysical methods for water security assessment. The technology's proven track record across diverse environments, from Pacific islands to European coastal plains and from African arid regions to North American agricultural areas, demonstrates its universal applicability and effectiveness for groundwater mapping and management.
The survey is expected to be completed over the coming months, with preliminary results anticipated to inform immediate water security planning. Communities will be engaged throughout the process, with results shared to support local water management decisions.