Marette

20.1°C Water temp · Jun 8

France Coastal 1 - Excellent 20.1°C

Satellite image of MARETTE — Satellite image © Esri

Bathing water profile document for Étang de Berre beaches, covering risk profiles and management plans updated in 2025. The document establishes bathing water quality monitoring protocols based on EU Directive 2006/15/EC, including surveillance procedures, quality classifications, and risk assessments for multiple beaches around the lagoon. Water quality is monitored for intestinal enterococci and Escherichia coli, with results classified as insufficient, sufficient, good, or excellent.

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Water

Étang de Berre is a coastal and transitional water body with multiple sandy and pebbly beaches. Robinsons beach is 679 metres long with an average width of 5 metres, oriented E-SE. The lagoon receives water from three main tributaries: Arc, Touloubre, and Cadière rivers.

Location

Étang de Berre lagoon in France, with multiple beaches monitored including Robinsons (Rognac), Champigny, Marettes, Romaniquette, and others.

Season

Monitoring occurs from May to September. Minimum of 4 samples per season required for quality classification.

Water Quality

Water quality is classified using four categories: insufficient, sufficient, good, or excellent. Classification is based on intestinal enterococci and E. coli measurements (UFC/100ml). Excellent quality requires enterococci ≤100 UFC/100ml and E. coli ≤250 UFC/100ml at the 95th percentile. Robinsons beach achieved Excellent classification in 2024, with historical ratings of Good (2021) and Excellent (2022, 2023). Wastewater treatment plants in the watershed are potential pollution sources, particularly the Arc river near Champigny beach.

Risks

Three beaches identified as sensitive to storm contamination: Champigny, Marettes, and Romaniquette. Storm events can cause bacterial contamination of bathing waters; 24-hour beach closures are recommended following storms or rainfall exceeding 10mm/24h. Robinsons beach has elevated numbers of discharge outlets (1 elevated, 1 moderate, 7 low-level) within 1000 metres. Water confinement risk exists due to beach location in a small cove.