Irish Water has defended its set up costs, which are almost twice the average of similar entities in England and Wales.
The company is defending the costs, saying the UK companies have existed for 25 years, and have become efficient over that time.
In a statement, Irish Water says the system here has suffered from decades of under investment and it will take time to catch up with our UK counterparts.
It's estimated Irish water will cost around 180 million euro to set up.
Sinn Fein's Environment spokesperson, Brian Stanley, says taxpayers are funding a corporate monster.
