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Logger said he saw warning signs last night too.
Important safety information......
Their has been a significant sewerage discharge last night from Rhos on Sea.
Swimming and bathing has banned from Llandudno to Rhyl untill levels return to a normal level.
It would be advisable for anyone planning water sports to avoid this stretch of the coast for the next few days untill its had chance to clear.
The symptoms typically occur between 12 to 72 hours after exposure and include high temperature, vomiting, abdominal cramps and diarrhoea, which lasts 4-6 hours. However their is a chance of other illnesses from exposure to raw sewerage.