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News | OSMOSUN® and G&G Boatwash strengthen their collaboration to secure access to freshwater in French Ports.

News

16.06.25

OSMOSUN® and G&G Boatwash strengthen their collaboration to secure access to freshwater in French Ports.

Chartres, June 17, 2025 – OSMOSUN®, a leading player in solar-powered desalination solutions, and G&G Boatwash, a distributor of ecological hull cleaning stations and desalination solutions for French ports, announce the extension of their partnership.

Several marinas are now equipped with desalination units and brackish water recycling systems, following the initial roll-out by OSMOSUN® + G&G Boatwash in 2022. Nearly 500m³ of seawater has already been treated and reused to clean recreational boats in ports lacking freshwater resources.

Desalination is becoming a key component in the long-term transition of marinas toward freshwater resource autonomy.

Over the past two years, local government decrees have been multiplying in water-stressed areas, increasingly prohibiting the use of freshwater for boat rinsing in marinas. As a result, marinas have been seeking alternative solutions that would allow them to continue offering this high-value service to their clients, while complying with restrictions and pursuing a sustainable approach.

In this context, G&G Boatwash, a French company specializing in hull cleaning solutions for marinas, partnered with OSMOSUN® in 2022 to deploy seawater desalination units from OSMOSUN®. These systems are designed to reduce water consumption by pairing desalination with ecological cleaning stations (Drive-in-Boatwash®). This collaboration is now being extended.

Proven systems with reduced energy and environmental impact

In parallel with the implementation of water conservation measures, several ports and shipyards in 4 marinas have already been equipped with OSMOSUN desalination systems. Notably, the Lavandou Carénage shipyard (Var, 4.8 m³/day) and Saint-Cyprien (Pyrénées-Orientales, 12 m³/day) have installed units connected to the electricity grid. The ports of Canet-en-Roussillon (Pyrénées-Orientales, 4.8 m³/day) and Bormes-les-Mimosas (Var, 60 m³/day) operate using solar panels, thus reducing their carbon impact.

For each installation, the brine resulting from the water treatment is pre-diluted to reduce salinity as much as possible, then discharged into areas where diffusion is facilitated by currents, in order to minimize environmental impact. The OSMOSUN desalination units combine chemical-free operation with a deliberately low conversion rate, naturally producing low-salinity brine that is diluted with seawater before discharge.

“The environmental impacts of our units are monitored and approved by the local DREAL authorities, and all have reported salinity levels very close to the levels of the water initially taken in, which confirms de facto the low environmental impact of our installations,” explains Maxime Haudebourg, CEO and Founder of OSMOSUN®.

An extended partnership for a high value-added market

Building on the success of these first projects, OSMOSUN® and G&G Boatwash have decided to extend their partnership in order to continue equipping ports in the Mediterranean as well as in other geographical areas such as the Atlantic, for example.

“We already have new requests,” says Maxime Haudebourg. “The need for access to resources is there, even though water stress has decreased this year. Climate change is structural and will continue to impact rainfall: marinas have understood that they have every interest in securing their water supply in a sustainable and eco-responsible way, and no longer suffer the consequences of potential crises.”

“Our company was created with a desire to protect the marine environment and is driven by one conviction: to take part in the water transition of the sailing and yachting sector,” concludes Gaël Minier, co-founder of G&G Boatwash. “Thanks to our partnership with OSMOSUN®, we offer eco-responsible installations, powered by solar energy, capable of managing and drastically reducing the salinity of brine to ensure better protection of ecosystems. It is an excellent showcase of our respective expertise. Being able to offer ports not only eco-friendly desalination solutions but also treatment and reuse units for hull wash water and rainwater clearly contributes to intelligent water management in ports and protection of natural resources.”


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