The report, 'Delivering Ireland's Water Services for the 21st Century' was compiled by the Irish Academy of Engineering, Engineering Ireland and representatives from the Office of Public Works and Dublin City Council and was received by the Dept last year.
It states that the installation of water meters in households throughout the country would cost 1 billion euro rather than the 500m euro figure that the government estimates.
It also debunks Government estimates for the level of charges to be imposed:
'Water services cost 1.6 billion in 2008 and combined charges for domestic and non domestic customers would not achieve 50% of that amount at present rates'
The report also casts doubt on Phil Hogan's stated ambition of having water metering up and running by 2014.
'In UK water companies, an average of only 30% and a maximum of 65% of domestic customers have been metered after 25 years of privatisation'
The plan to provide free allowances for certain groups is not recommended as ' to be successful Irish Water must be sustainable'
A Dept spokesperson said the report had been considered by PWC who in turn had reported to the government.
Source: Mail on Sunday 8/1/2012.
I haven't found an online version yet.