Locals have concerns over impact to farms.
Campaigners against the River Shannon Water Supply Project says Dublin has a pipe issue, not a supply issue.
The government last month approved the next stages of the project, which will see water diverted from the Shannon to address supply shortages in the capital.
Uisce Éireann initially quoted a maximum spend of 5 point 9 billion euro on the cross-country pipeline - however, its upper estimates are almost double that.
Tipperary farmer Liam Minehan from the Fight the Pipe group says some locals fear the plans will go ahead, despite their opposition:
Uisce Éireann is reassuring landowners there will be minimal impact to farms during the process.
However, these locals still have concerns:
Prison Dispute Linked To Fatal Arson Attack In Offaly
BnM Opens New Funding Round For Offaly Community Benefit Fund
Orange Wind Alerts Issued As Storm Bram Approaches
Irish Hauliers Threaten Protests Over Toll Discount Dispute
Former Irish Soccer Legend Backs Offaly Community After Arson Attack
Tributes Paid To Former Fine Gael Midlands Politician
Midlands 103 Launches Joint Christmas Appeal With Simon Community
Offaly Arson Attack Is An Attack On Society Itself - Taoiseach
Woman Facing Life In Prison After Double Midlands Murder
Housing Committee Chair Flags Cost Concerns Over Apartment Fire Safety Scheme
Justice Minister Wants People To Come Forward Over Offaly Arson Attack
New Report Warns Of “Poor Liquidity” As Ireland’s Housing Market Stalls
Laois TD Renews Calls For Updated Wind Farm Guidelines
Midlands Man Laid To Rest Today
Anti-Racism Funding Granted For Offaly And Westmeath Groups
Gardaí Begin Murder Investigation After Child And Woman Dies In Offaly House Fire
Ashling Murphy Murder "Wrongly Accused" Granted Bail Over Theft Charge
Young Boy And Woman Killed In Offaly House Fire
Laois Makeup Artist Warns Of Expired Suncream Dangers
Lynx and Wolves In Ireland Pose Minimal Threat - Offaly Biodiversity