Bathing Water Quality Results

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Dublin City Council monitors bathing water quality at its three designated beaches, Dollymount, Sandymount and Merrion Strands. Monitoring is also carried out at the Shelley Banks beach, the South Bull Wall at the Half Moon Swimming Club, as well as the North Bull Wall, near Dollymount Strand.

In accordance with the EU Bathing Water Directive, 2006 and Bathing Water Regulations, 2008 (S.I. No. 79 of 2008), each designated bathing water must be sampled no fewer than 4 times during the bathing water season (June to September). Monitoring by Dublin City Council is in excess of this with at least twenty samples being taken from each location between mid May and mid September. Sampling is continued outside the bathing season twice each month.

Assessment of water quality involves analysis of two types of bacteria (E coli and Intestinal Enterococci) which may be present in the water.  These bacteria are indicators of water quality. The results are categorised in accordance with Bathing Water Regulations, 2008. Bathing water quality is classified as ‘excellent’, ‘good’, ‘sufficient’ or ‘poor’ and these classifications are based on the concentrations of the two bacteria species detected in samples of bathing water.

The results of analysis for 2015 are displayed on the three designated bathing beaches and results for all bathing areas are summarised in the table below.

Image of bathing water quality results
 

*Investigative Sample

 

 An image of a blue flag  Indicates excellent water quality (Blue Flag limits) – Samples should not exceed 250 (CFU) E. Coli and 100 (CFU) Intestinal Enterococci per 100 ml.
 An image of a green flag Indicates good water quality – Samples should not exceed 500 (CFU) E. Coli and 200 (CFU) Intestinal Enterococci per 100 ml.
Indicates sufficient water quality - samples should not exceed 1,000 MPN E. coli and 250 CFU Intestinal Enterococci per 100 ml
Indictes poor water quality - samples exceed 1,000 MPN E. coli and 250 CFU Intestinal Enterococci per 100 ml

Because cultivation of bacteria takes a number of day’s results are posted approximately one week after the sample has been taken.

Bathing Water Quality Results from 2016

Image of bathing water quality results

Bathing Water Quality Results from 2015

Bathing Water Quality 2015

Bathing Water Quality Results from 2014

Bathing Water Quality 2014

Bathing Water Quality Results from 2013

Bathing Water Quality results 2013

Bathing Water Quality Results from 2012

Bathing Water Quality 2012

Bathing Water Quality Results from 2011

 A graph of Bathing Water Quality Results from 2011

For more information

For further information on bathing water quality, see the EU Bathing Water Directive (76/160/EEC) and Guidance Notes to the European Blue Flag Beach Criteria at www.blueflag.org/criteria

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