Water quality
Monitoring of the Ostreopsis micro-algae: samples, history and reports.
Concentration trends
Logarithmic scale. Zero values and "below detection threshold" values cannot be plotted on this scale (see the full table below). Dark red dots indicate a beach closure.
Approved testimonials
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Full sampling history
| Sample | Result | Cells/L | siamensis | ovata | Temp. | Status |
|---|---|---|---|---|---|---|
| 02/07/2026 | 03/07/2026 | < 40 | 100% | — | 22.6°C | Undetectable |
| 30/06/2026 | 01/07/2026 | < 40 | 100% | — | 22.6°C | Undetectable |
The beach
Tides, daylight and practical information — unrelated to water quality.
Data sources
- Official samples: Communauté d'Agglomération Pays Basque (CAPB) — the only ones used for status and closures.
- Tides: Open-Meteo forecasts (indicative).
- General beach information: OpenStreetMap contributors (ODbL) — may be incomplete or out of date.