Tonga – Matamaka: Turning the Sea and Sun into a Lifetime of Clean Water
For the first time in history, the remote island communities of Matamaka and Hunga in Vava’u, Tonga, have a guaranteed, independent source of pure drinking water.
Historically dependent on erratic rainwater collection and highly vulnerable to prolonged droughts, these communities faced a critical turning point with the declaration of a “Super El Niño.” To answer the crisis, Bluemont Pty Ltd, in partnership with Elemental Water Makers, stepped in to turn the surrounding ocean into a life-saving resource using 100% solar power.
Overcoming the Odds: The Reality Behind the Project
While the technology is seamless, delivering it was anything but. Over a year of planning and heavy lifting, this project tested the absolute limits of remote logistics. Moving desalination infrastructure across the Pacific to remote outer islands meant dealing with loose logistics, volatile shipping schedules, and highly unpredictable conditions.
The project succeeded where others failed because of absolute dedication. The sheer hard work and resourcefulness of the project team, alongside the fierce determination of the local Tongan villagers, pushed the project across the finish line on time.
Funded for Impact: Our Sincere Thanks to PREO
This project would have remained a vision without crucial international support. We extend our deepest gratitude to Powering Renewable Energy Opportunities (PREO) and the UK Carbon Trust for providing the vital grant funding that made this vision a reality.
By backing this project, PREO has directly helped address a profound regional water crisis, proving that clean water access can be unlocked for remote, small island communities without using a single drop of fossil fuel. Their investment has not only funded physical infrastructure but has enabled the local villagers to be trained to operate and maintain these plants independently, securing long-term, self-sustaining impact.
Community Impact: A Transforming Narrative
For generations, the residents of Matamaka were tied to the unpredictability of the weather. When droughts hit the Vava’u island group, rainwater tanks ran dry, forcing families to ration water or pay exorbitant prices to ship emergency bottled water from the main islands.
The introduction of the Elemental Water Makers system has brought fundamental changes to daily life:
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Guaranteed Water Security: The village now has a constant, weather-independent source of pure water, ensuring schools, homes, and healthcare facilities never face shortages.
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Economic Resilience: Local funds previously spent on emergency water transportation and fossil fuels are now retained within the community, fostering local economic stability.
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Health & Sanitation: Access to a continuous supply of clean, high-quality water drastically reduces the risk of waterborne illnesses and improves overall community sanitation.
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A Blueprint for the Pacific: This project serves as a live demonstration for neighbouring islands, proving that clean water access does not have to come at the expense of the environment.

Tonga.
Solar desalination for an island community.
“It’s taken me some time to reflect on Bluemont Pty Ltd recent Elemental Water Makers Solar Desalination installations in Vavau, Tonga. It was life-changing for me as well as the villagers who now have a reliable source of clean drinking water for the first time ever.
I’ve delivered a few projects over the past 27 years, but this one was possibly the most challenging (and rewarding). The remoteness of the communities and looseness of the logistics were major obstacles. It took everything I’ve learnt to date to keep the project on track. I set off to Tonga not 100% sure we would be successful, but the resourcefulness and sheer hard work of Viktor van Houten, Max De Man and Nicholas Bear and the local communities saw us through.
It all hit home as we neared completion of the first site. The local boys were playing their music (whilst digging trenches for our pipelines) and a reggae version of Sia ‘Bird Set Free’ played on their stereo. A massive thanks to Siaosi Lepuha Faka’osi Quddus Fielea. Danish Khalil, CA Reinoud Feenstra Sid Vollebregt and Arnaud Diemont for your support.
With the declaration of the ‘Super El Nino’ this work could not be more important. Via my good friend Siaosi Lepuha Faka’osi I’m in discussions with the Tongan Crown Prince, Prime Minister and Ministry of Climate Change writing a proposal to approach the Asian Development Bank (ADB) to roll out solar desal to 23 further remote communities in Tonga.
These projects matter.”
Project media.

Blessed by the Heavens.

Community participation.

Access to clean water.

Plug & play solar desalination.

Training for operation.
