A temporary swimming ban has been put in place at Seapoint beach in south Dublin.
Following poor water quality test results from a sample take on Monday, a bathing advisory warning was put in place.
That has now been replaced with a prohibition notice, meaning swimming and bathing are not allowed at Seapoint beach until 25 August.
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Please note that a temporary Bathing Prohibition Notice has been issued at Seapoint beach. Swimming and bathing is prohibited from now until Tuesday 25th August. For more details click here: https://t.co/VHgltWoVHZ
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Dún Laoghaire-Rathdown County Council has said the poor water quality results indicate an increase in the levels of bacteria found in the bathing water, as a result of overflows from the Irish Water wastewater network.
The council has said a bathing water team will liaise with Irish Water, and will carry out a revised risk assessment of potential risks next Monday 24 August.
The results will be available on the council's website and social media platforms.
Water samples have shown breaches of the mandatory levels for e-coli and intestinal enterococci.