BATHING WATER QUALITY 2010

 

 

Blue Flag Water Quality Criteria
1. (1/3/5) The water must comply with the Mandatory and Guideline value of the appropriate microbiological parameters of the EC Bathing Water Directive 76/160/EEC. Guideline water must meet the guideline standard for total coliform, faecal coliform (E coli) and faecal streptococci parameters and the mandatory standard for the faecal and total coliform parameters. There should be at least 20 samples taken at regular intervals throughout the bathing season.
Parameter

Guideline standard- no more than:

Percentage Compliance
Mandatory - No more than:
Percentage Compliance
total coliform
500 per 100ml
80%
10,000 per 100ml
90%
faecal coliform
100 per 100ml
80%
2,000 per 100ml
90%
faecal streptococci
100 per 100ml
90%
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Physical chemical parameters will be included from the year 2005 (g)

Parameter
Mandatory
Guideline
pH
6 - 9
colour
no abnormal change
mineral oils
no visable film on the surface and no odour
surface active substances
no lasting foam
phenols
no specific colour
transparency
secchi depth > 2m or 'no abnormal decrease'
secchi depth 2m
tarry residues and floating materials
absence of floatables and sewage solids in water and land (m)
oil pollution
absence (m)