In the Bassin d'Arcachon, oyster farmers are advocating for the long-term support of a preventive water monitoring program known as Oxyvir, which was established after severe contamination incidents in previous years. These farmers remain vigilant due to the ever-present threat of wastewater overflow that could jeopardize the safety of their oyster harvests. Addressing the challenges posed by water pollution is crucial for ensuring the health of marine environments and maintaining the livelihoods of those dependent on shellfish farming.

The Oxyvir program, tested between 2024 and 2026 by seven regional shellfish farming committees, aims to maintain high sanitary standards in the lagoon's waters throughout the year. By enabling rapid detection of water contamination, this initiative allows oyster farmers to adjust their practices, including managing the feeding of oyster parks through collective or private drilling for water. This proactive approach not only safeguards the health of the oysters but also protects public health by reducing the risk of further contamination incidents.

In light of recent contamination events linked to norovirus outbreaks caused by wastewater overflow, the oyster farming community is keen on ensuring that mechanisms like Oxyvir are sustained and enhanced. The call for a permanent monitoring system reflects the broader challenges facing marine aquaculture amid climate change and increased pollution pressures, highlighting the need for robust measures to secure the future of shellfish farming and the ecosystems they rely on.