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Bathing water quality > LES GRANGES
Year : 2025 LES GRANGES
"Département" : MORBIHAN   /   Town : BILLIERS
Start of the swimming season :   15/06/2025 End of the swimming season :   15/09/2025
Unsupervised site Site with facilities No Pets Site without showers Site without drinking water Site not accessible to people with reduced mobility Site without toilets Site without rescue station
Grade history
2021 2022 2023 2024
Classification as per directive 2006/7/EC in force from the 2013 season
 
Excellent Excellent
Good Good
Sufficient Sufficient
Poor Poor
Insufficiently sampled Insufficiently sampled
Unranked site Unranked site
2 2 2 2
From the 2013 bathing season, the classification calculation method is amended in application of European Directive 2006/7/EC More information From the 2013 bathing season, the classification is made on the basis of the results of analyses from the previous 4 seasons of the 2 microbiological parameters Escherichia coli and intestinal enterococci, by comparing the results with the values established under European Directive 2006/7/EC
Results of current year's sampling 2025
05/06/2025
Bon 		18/06/2025
Bon 		24/06/2025
Bon 		30/06/2025
Bon 		10/07/2025
Bon 		16/07/2025
Bon 		22/07/2025
Moyen
30/07/2025
Bon 		05/08/2025
Bon 		11/08/2025
Bon 		19/08/2025
Moyen 		29/08/2025
Bon 		03/09/2025
Mauvais 		11/09/2025
Moyen
 
Good result Good result  -  Average result Average result  -  Poor result Poor result
Details of current year's sampling 2025
Mandatory parameters 19/08/2025 Limit value Good/Average Limit value Average/Poor  
Intestinal enterococci (/100mL) <15 100 370  
Escherichia coli (E.coli) (/100mL) 140 100 1000  
Other parameters 19/08/2025
Coliform bacteria (/100mL)   - -  
Mineral oils Absence - -  
Phenols Absence - -  
Surface active agents /Foam Absence - -  
Abnormal colour change   - -  
Secchi transparency   - -  
Ostreopsis spp.   - -  
From the 2010 bathing season, the mandatory parameters to monitor and assess the quality of bathing waters have been changed. More information By the start of 2010, the Directive 2006/7/EC lays down two mandatory parameters for analysis: intestinal enterococci and Escherichia coli. Other previous parameters issued from the Directive 76/760/EEC, such as total coliforms or chemical parameters, may possibly be taken into account but are optional.