The firm said a public consultation will be carried out to determine what makes excess usage
Irish Water is to impose charges for excess water use from January 2019.
But the utility provider said bills for overuse will not be issued until July 1.
Rules relating to charges will be decided by Housing Minister Eoghan Murphy.
The Water Services Act 2017 states charges to domestic customers will only apply where the volume of water consumed exceeds the 213,000 litres annually.
Irish Water said a public consultation will be carried out to determine what makes excess usage.
A new report from the Commission for Regulation of Utilities confirmed the suspension of water charges will continue until December 31 2018.
Original article; Irish Mirror, Feb 9, 2017