Dún Laoghaire-Rathdown County Council and Dublin City Council have issued a warning to the public not to swim at a number of Dublin beaches because of a sewage leak at Ringsend wastewater treatment plant.
The warning applies to Dollymount, Sandymount and Merrion Strands, Seapoint Beach, Sandycove Beach, The Forty Foot Bathing Area, Killiney Beach, and White Rock Beach.
The temporary bathing prohibition notices were put in place at the beaches today and is expected to remain in place for seven days.
DLRCC said all areas along the Dún Laoghaire-Rathdown coastline whether designated as bathing areas or not are covered by the notice.
In a statement DLRCC said it was made aware of a "sewerage wastewater overflow at the Irish Water operated Ringsend wastewater treatment plant during the recent yellow weather warning event on 4 and 5 June."
The Health Service Executive has also asked that aside from bathers and beach users, organisers of any coastline or water based leisure or sporting event along the Dún Laoghaire-Rathdown coastline pay particular attention to the warning.
DLRCC said updates will be posted to social media.
In a statement Irish Water said that there had been stormwater overflow from the Ringsend Wastewater treatment plant following heavy rain this week.
It said further sampling results of the affected waters were expected next week.
The statement added that a swimming ban for the entire 2019 bathing season would be in place at Sandymount and Merrion beaches due to general water quality.