[     News listing ](/en/news "  News listing")

 02 Feb. 2026 



 

 

 

**A mission led in late 2025 by Veoliaforce volunteers from the Veolia Foundation supported the International Organization for Migration (IOM – UN Migration) in strengthening water access for displaced communities in South Sudan. By eliminating the need for chemicals, the partnership is helping lay the groundwork for more sustainable and resilient water systems in displacement settings.**



 

 

 



In the context of South Sudan’s ongoing humanitarian emergency, technical responsiveness is critical to maintaining essential water services for displaced communities. In partnership with IOM, the Veolia Foundation has stepped up its expert missions and technical support to strengthen safe water access for populations affected by displacement.

## Ultrafiltration: Ending the challenge of chemical reagents

Five Veoliaforce experts and three Aquaforce 7500 units were mobilized for this mission. These water treatment units utilize membrane filtration technology, which eliminates the need for aluminum sulfate.

In landlocked areas such as Bentiu and Malakal, the transportation of this chemical is often uncertain and expensive. It is also particularly polluting. By replacing chemical treatment with a physical barrier (ultrafiltration), the Foundation enables:

- Access to high-quality water to mitigate cholera risks;
- Service continuity independent of complex supply chains;
- Environmental protection for aquatic environments and soils against the risk of aluminum sulfate polluting water if mismanaged

## A strategic partnership for humanitarian emergencies

This deployment illustrates the synergy between the cutting-edge expertise of Veoliaforce volunteers and IOM’s operational strength on the ground. The UN agency emphasizes the strategic importance of this partnership:



 

 

 



 

 

   ![Aquaforce 5000 deployed in Sud Sudan](/sites/g/files/dvc3696/files/styles/media/public/image/2026/02/Aquaforce%205000%20deployed%20in%20Sud%20Sudan%20-%20End%20mission%20photo.png.webp?itok=lerjU3vc)   





 

 





   ![Aquaforce 5000 deployed in Sud Sudan](/sites/g/files/dvc3696/files/styles/media/public/image/2026/02/Aquaforce%205000%20deployed%20in%20Sud%20Sudan.png.webp?itok=5hovrr6I)   





 

 





 

 

 

 





« These innovative systems are building sustainability into the heart of humanitarian response. By reducing the need for fuel and chemicals, we’re cutting costs, protecting the environment, and strengthening local capacity to manage water services independently.” »

 

Josep De Trincheria

 

IOM’s Water, Sanitation and Hygiene (WASH) specialist

 

 

 

 

 





To carry out this mission, five Veoliaforce volunteers were present in South Sudan in December: **Julien de Sousa** and **Guillaume Verhaeghe** (based in France), **Adam Testagrossa** (from Veolia’s North American teams), and **Muriel Schuller** and **Thomas Fougnié**, water technology experts based in France and Australia, respectively.

They were supported remotely by **Pierre Rousseau**, a water technology expert who was himself deployed to the field in the spring of 2025. That initial mobilization saw seven Veoliaforce volunteers travel to South Sudan to deploy mobile water treatment units and conduct infrastructure audits.

[Read on IOM's website : "Redefining Water Treatment in South Sudan"](https://southsudan.iom.int/stories/engineering-sustainable-water-solutions-how-iom-and-veolia-foundation-are-redefining-water-treatment-south-sudan)

 



 

 

 



 

 

  [  ![Deployment of an Aquaforce, South Sudan](/sites/g/files/dvc3696/files/styles/default/public/image/2026/02/Renk-4.jpg.webp?itok=0crlnSzi)  ](/en/south-sudan-major-mobilization-response-humanitarian-crisis)  



[*Read the story of the Veolia Foundation's global mobilization with the IOM in South Sudan in 2025.*](/en/south-sudan-major-mobilization-response-humanitarian-crisis "South Sudan: A major mobilization in response to the humanitarian crisis")