Five years after the initial report, the Court of Audit has released a new assessment on the efforts to combat green algae in Brittany. While there has been a reduction in nitrate levels in the region over the past decade, the progress is deemed insufficient to fully address the ongoing problem. This new evaluation comes after the state was condemned in March 2025 by the Rennes administrative court, a decision prompted in part by the environmental group Eau et Rivières de Bretagne. The region, particularly the Saint-Brieuc bay, has long been a symbol of the green algae issue, which has affected local beaches and ecosystems. On Friday, September 4, the first president of the Court of Audit, Amélie de Montchalin, visited Morieux beach in the Côtes-d'Armor department, accompanied by the president of the Brittany Regional Audit Chamber. Earlier that day, the Court of Audit presented its findings to local officials, environmental groups, and government agencies in Lamballe. The goal was to evaluate the progress made and the remaining challenges in the fight against the algae. The report found that only a third of the recommendations made five years ago have been fully implemented, leaving the overall assessment mixed. The Court of Audit highlighted several ongoing issues. For instance, 80 percent of algae strandings occur on mudflats, where few measures are currently in place. There is also a lack of scientific models to set precise objectives for reducing algae growth. Additionally, financial aid provided to farmers and agri-food companies is not sufficiently tied to environmental conditions, and environmental control services lack access to data on livestock farming. Amélie de Montchalin emphasized that the report should support on-the-ground efforts rather than serve as a mere bureaucratic exercise. The problem of green algae in Brittany is not new; for over 50 years, European and French courts have criticized the state for its inadequate response. Since 2010, seven different strategies have been introduced to address the issue. However, the consequences of algae strandings remain severe, including beach closures, damage to the coastal image, and challenges for local oyster farmers. When decomposing, the algae release hydrogen sulfide gas, which can be deadly. In June 2025, courts for the first time linked the death of a jogger in the Côtes-d'Armor to green algae. The nitrates fueling the algae's growth are largely from agriculture, particularly from intensive farming practices. Although water quality has improved since 2010, recent progress has slowed. In response to the court's condemnation, the state has adopted a new strategy aimed at better protecting waterways and targeting high-risk farms. New measures, including more frequent soil testing and wetland restoration, took effect on September 1. However, the effectiveness of these actions remains to be seen.