Irish Water has revealed it expects a range of problems with its first bills when they're sent out from next month.
The company says details like the number of people in a house may be incorrect, more than 2 thousand meters won't be read because of technical issues, and up to 150 thousand properties with a private well and septic tank will be mistakenly billed.
The company says they anticipate 'a lot' of calls, and 750 staff will be in place in call centres to handle the queries.
Meanwhile, the Government announced a new deadline for registering for water charges last night.
Environment minister Alan Kelly says households will have to register before the 30th of June - or else they won't qualify for the 100-euro water conservation grant.
Minister Kelly told TDs that more details about the grant, and how it would be paid, would be announced next month:
