The pipeline is set to benefit Offaly and Westmeath.
There have been around 150 requests from landowners to alter the route of the new Water Supply Project from Uisce Éireann.
The utility says the midlands and eastern regions are too dependent on the water supply from the River Liffey, with the new project to see a pipeline from the River Shannon to a reservoir in Peamount, Dublin.
Additional pipelines along the development's 'spine' would service Offaly, Westmeath and North Tipperary.
Uisce Éireann says the project has undergone many alterations since last October, and they are expecting a decision imminently.
Asset Strategy Senior Manager at Uisce Éireann, Angela Ryan says they've been engaging with around 500 landowners:
Man Hospitalised With Serious Injuries Following Offaly Crash
Biodiversity Children's Book Launches In Midlands
Over €3.8m In IT And Minor Works Grants Going To Midlands Schools
Midlands Property Prices Continuing To Rise
Mercosur Vote Down To The Wire - Midlands MEP
Offaly Community Sports Facility To Remain Closed Over Christmas
Westmeath Security Expert Welcomes Gardai Training For EU Presidency
Lower Childcare Fee Caps Could Lead To Closures - FECP
Gardai Investigating Potentially Suspicious Approach Of Child In Laois
Midlands Animal Rescue Shelter Unequivocally Against Fox Hunting
Judge Disappointed And Surprised By AG Ruling On Burke Contempt Of Court Referral
Five Maternity Reviews At Portiuncula Hospital Ongoing
Gardaí Confirm Discovery Of Man's Body At Midlands Premises
Laois Senator Warns Blister Pack Funding Cut Will Lead To Dangerous Confusion
Call To Fast-Track Living City Initiative For Westmeath Town
Midlands Community Sports Facility Closing With Immediate Effect
Man Arrested In Connection With Fatal Offaly Fire Released Without Charge
Westmeath Waste Facility Remains Temporarily Closed
Laois Man To Be Laid To Rest Friday
Laois Community Safety Partnership To Start January