It says the facility will be able to power itself.
A regional sludge hub is required to ensure the waste water produced by treatment plants is treated in an environmentally sustainable manner.
Irish water also say that the process can be used to generate bio-gas which will then power the plant itself.
Mullingar, Portlaoise and Tullamore are part of a group of sites identified as possible locations.
Wastewater Infrastructure Manager with Irish Water, Paul Fallon, says different criteria will be used to choose the best site:
TUS Athlone Students Voice Concerns Over Rising Fuel Costs
Revenue Seize Over €94k Of Contraband In Various Operations
Over €7.4 Million Announced For Housing Adaption Grants For Midlands
Three Hour Commute Forced Midlands Woman To Leave Dublin Hospital Job
Westmeath Fundraising Committee Seek Volunteers For 24 Hour Walk
Snow Could Be On The Cards This Week Despite Longer Evenings
First Laois Finalist In National Heritage Awards
'Hocus Pocus… No More Focus' Driver Caught In Laois Hours Into Driving Ban
Tolü Makay And Katelyn Cummins Into Dancing With the Stars Final
Over €65K Funding For Midlands Agricultural Shows
Westmeath TD Condemns Arson Attacks On Westmeath Churches
Road Hauliers Warn Of Rolling Protests Over Rising Fuel Costs
Gardaí Appeal For Witnesses To Vandalised Westmeath Train
Giant Concrete Pipes Depart Offaly Concrete Company For Bypass Project
Further Grants Possible To Help Homeowners With Rising Costs - Taoiseach
Laois County Council Launch Centenarian Award
Midlands Set To Get €7.2M For Retrofitting Social Homes
Midlands MEP Challenging Proposed CAP Reforms After Audit
Bressie Opens Up About Pregnancy Loss In New Book
New Irish Sign Language Tours For OPW Sites