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:
Laois Women’s Quilt And Antarctic Adventures To Take Centre Stage At Midlands Science Festival
Singer Tolu Makay Brings National Tour Home To Offaly
Irish Rail Appeals For Public Help After Midlands Train Vandalism
Revenue Officers Seize Contraband Worth €169k
Fabric Of Change Launches Week-Long Fashion Pop-Up In The Midlands
Offaly Gardaí Appeal For Witnesses After Church Break In
Two Cars Seized In Midlands During Garda Tyre Safety Crackdown
Offaly Woman Crowned Ms Ireland