Mr. Seán Laffey:

We monitor according to regulatory requirements and we do not monitor for microplastics at the moment. We do not test for it so we cannot offer any views of the efficacy or otherwise of our treatment systems at the moment. All we know from research is that microplastics, by their very nature, range from particles which are extraordinarily small up to ones which our treatment processes would catch quite easily. I would imagine that, across a range of sizes, our processes have different efficiencies.