Dáil Ceann Comhairle Sean Barrett could be facing a motion of no confidence in the coming days.
TDs from Sinn Féin and the Technical Group are considering the move after the conduct of business in the Dáil this morning.
The Dáil adjourned last night with confusion over how much the State would have to spend on the €100 grant for every home.
But when business resumed this morning, the Ceann Comhairle Sean Barrett would not allow that discussion to continue.
Following that disagreement, independent TD Roisin Shortall was kicked out of the Dáil after complaining that the government isn't answering questions about Irish Water's financial model.
Some TDs have accused the Ceann Comhairle of subverting the parliamentary process - and are likely to make a formal call for his resignation in the coming days.