That's according to reports in the Irish Times this morning.
The Shannon Pipeline is likely to exceed its estimated cost of €1.3 billion.
The Water Supply Project Eastern and Midlands Region is set to abstract water from the River Shannon at the Parteen Basin in Tipperary and pipe it to a reservoir at Peamount in South Dublin.
According to reports in the Irish Times, representatives from Irish Water said due to "upward pressure on costs", the project is "likely to exceed" the indicative estimate outlined in the National Development Plan.
A spokesperson said the project was still in the early planning stages and “detailed costs for this project will be made available on completion of the tender process”.
Construction is due to start in 2023 or '24 and be carried out over a four-year period.
New Laois County Council Chief Exec Speaks Of "Honour & Privilege"
Pipe Bombs, Cocaine, Cannabis, And Cash Seized In Ballinasloe
Simplifying Refurbishment Grants A Priority For General Election Candidate
SIPTU Bord Na Móna Workers Say Recycling Company Is Up For Sale
Laois Boy's Fundraiser Reaches More Than Double Its Target
Nikita Hand Faced Brutal Cross-Examination In Civil Case - Laois Law Professor
Laois Candidate Defends Taoiseach Following Exchange With Carer
Westmeath Athletics Club To Publish Book to Mark 50th Anniversary
Westmeath Households Expected To Have Water Supply Restored Today
Government Must Recognise Carers - Sorca Clarke
Public Consultations On Westmeath Wind Farm Project Begin This Week
A Further 2,500 Westmeath Premises Can Connect To High Speed Broadband
Westmeath Business Attends Leading Business Tourism Conference
Portartlington Connector Bus Line To Be Discontinued
Midlands Parents Concerned Over A Lack Of Therapists In Special Schools
28% Of People In The Dublin Midlands Region Have A Medical Card
Comedy Gig Want To Show How Menopause Can Be Fun
Midlands Likely To Escape Worst Of Storm Bert's Rain
Peter Burke Points Finger At Finance Minister Over VAT Rate Saga
Laois Teen Found Safe And Well