Mr. David Flynn:

It is extraordinarily difficult to retrofit existing stock. It is something that could certainly be looked at for new stock going forward. There are complexities in that regard. There are also safety issues. If a system is used within the household, grey water and potable water should not cross.

From Ireland's point of view, where we have good water resources albeit not always in the places they are needed, we need to ensure our supplies are sustainable in terms of where we extract the water being used, we do not lose a large volume of water as it is delivered through the network, and we fix leaks and reduce leakage overall; and reduce the amount of unaccounted water. In addition, the use of water needs to be efficient through the use efficient equipment in houses and industry, and so forth. It is a feature of future thinking, but it is far from being the only solution or area we can look at.

On the new river basin management plan, we will ask Irish Water to look at the water services strategic plan. That will address all the issues in respect of climate change adaptation going forward. There is also a climate adaptation plan for water services that addresses some of these issues.