Mr. Fintan Towey:

Approximately 10% of households depend on private wells. The small private supplies that are referenced there are also private wells, but where they are used in a setting where there is public consumption, be that either through public bodies such as a school or business, for example, a restaurant or pub that draws on a private well and uses that water, there is a requirement to register. Some 1,700 are registered. The view has been expressed that it is not known-----