Concerns have been raised that many private supplies are not registered, despite serving schools, nursing homes, sports clubs and self-catering accommodation.

Irish Water said every single one of the incidents had been investigated but there was no verified illness related to any of the queries received.

Minister Andrew Muir met with stakeholders following the publication of a Lough Neagh Action Plan.

The Court of Justice of the EU ruled the concentration of trihalomethanes in a large number of public drinking water supplies in the Republic have persistently exceeded recommended safety limits