Mr. Niall Gleeson:

I do not know the number offhand, but it does happen and we investigate it. However, they are quite rare and they typically turn out to be, perhaps, a localised issue with a connection to a house that might be leaking. We do not have issues such as this. The reason the public can feel that the water is safe and try to renew trust in the water services we provide is that we have hundreds of dedicated professionals around the country who daily look after those 800 water treatment plants, and it is their work that ensures the safety. The systems work. Normally, we are notified when there are issues. We contact the HSE and the EPA and we put on boil water notices. People see them coming on at times in small towns where there are issues.