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Bathing water quality > MARGARET
Year : 2023 MARGARET
"Département" : LOIRE-ATLANTIQUE   /   Town : PREFAILLES
Start of the swimming season :   15/06/2023 End of the swimming season :   15/09/2023
Site without facilities No Pets Site without showers Site without drinking water Site accessible to people with reduced mobility Site without toilets Site without rescue station
Current year's grading 2023 : Excellent
Caption:
Excellent
 Site where water quality is excellent
Good
 Site where water quality is good
Sufficient
 Site where water quality is sufficient
Poor
 Site where water quality is poor
Insufficiently sampled
 Site where the number of samples in the assessment period was not satisfied
Unranked site
 Unranked site
Prohibition
 Site with a temporary prohibition
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
1 1 1 1
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 2023
31/05/2023
Bon 		23/06/2023
Bon 		19/07/2023
Bon 		26/07/2023
Bon 		02/08/2023
Moyen 		25/08/2023
Bon 		06/09/2023
Bon
 
Good result Good result  -  Average result Average result  -  Poor result Poor result
 
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Details of current year's sampling 2023
Mandatory parameters 31/05/2023 23/06/2023 Limit value Good/Average Limit value Average/Poor
Faecal streptococci /100ml <15 <15 100 370
Escherichia coli / 100ml <15 <15 100 1000
Other parameters 31/05/2023 23/06/2023
Total coliform bacteria /100ml     - -
Mineral oils     - -
Phenols     - -
Surface active agents /Foam     - -
Abnormal colour change     - -
Secchi transparency >1,0 >1,0 - -
Ostreopsis     - -
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.
Details of current year's sampling 2023
Mandatory parameters 19/07/2023 26/07/2023 Limit value Good/Average Limit value Average/Poor
Faecal streptococci /100ml <15 15 100 370
Escherichia coli / 100ml 15 <15 100 1000
Other parameters 19/07/2023 26/07/2023
Total coliform bacteria /100ml     - -
Mineral oils     - -
Phenols     - -
Surface active agents /Foam     - -
Abnormal colour change     - -
Secchi transparency <1,0 >1,0 - -
Ostreopsis     - -
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.
 
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Details of current year's sampling 2023
Mandatory parameters 02/08/2023 25/08/2023 Limit value Good/Average Limit value Average/Poor
Faecal streptococci /100ml 61 <15 100 370
Escherichia coli / 100ml 177 <15 100 1000
Other parameters 02/08/2023 25/08/2023
Total coliform bacteria /100ml     - -
Mineral oils     - -
Phenols     - -
Surface active agents /Foam     - -
Abnormal colour change     - -
Secchi transparency <0,5 <1,0 - -
Ostreopsis     - -
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.
Details of current year's sampling 2023
Mandatory parameters 06/09/2023 Limit value Good/Average Limit value Average/Poor  
Faecal streptococci /100ml <15 100 370  
Escherichia coli / 100ml <15 100 1000  
Other parameters 06/09/2023
Total coliform bacteria /100ml   - -  
Mineral oils   - -  
Phenols   - -  
Surface active agents /Foam   - -  
Abnormal colour change   - -  
Secchi transparency <1,0 - -  
Ostreopsis   - -  
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.