A week-long swimming ban has been issued for all beaches in Dún Laoghaire-Rathdown in Dublin.
Council officials say they've been made aware of a sewerage wastewater overflow at the treatment plant in Ringsend.
The overflow happened during heavy rainfall earlier this week.
Following advice from the HSE, temporary bathing prohibition notices have been issued from today for all public bathing sites in Dún Laoghaire-Rathdown.
That includes designated bathing areas such as Seapoint Beach, Sandycove Beach, the Forty Foot Bathing Area, Killiney Beach and White Rock Beach.
It's expected the ban will be in place for seven days.
We have been made aware of a sewerage wastewater overflow at the Irish Water operated Ringsend wastewater treatment plant during the recent yellow weather warning.
This means that there is no swimming at all our beaches for the next 7 days. Read more: https://t.co/jefknjza4z pic.twitter.com/xziODa9kAR
— dlrcc (@dlrcc) June 6, 2019
In a statement, Dún Laoghaire-Rathdown County Council said:
"All areas along the Dún Laoghaire-Rathdown coastline whether designated as bathing areas or not are considered covered by this notice.
"It is HSE advice that aside from bathers & beach users any organisers of any coastline or water based leisure or sporting event along the Dún Laoghaire-Rathdown coastline should pay particular attention to this notification."
The council says they'll issue updates about the situation online and on social media.