The Tarn gorges experiment with safe swimming despite cyanobacteria

Millau and local stakeholders rely on awareness campaigns to avoid swimming bans.

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The fact

Cyanobacteria, toxic in summer, are monitored in the crystal-clear waters of the Dourbie and Tarn rivers.

The collaborative approach reduces closures and maintains tourist appeal.

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Auto-synthesis from 1 media source · identified on July 23, 2026